diff --git a/CHANGELOG.md b/CHANGELOG.md
index b6ed2d7d0..9c7ef562c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ Find out more about isort's release policy [here](https://pycqa.github.io/isort/
   - Implemented #1705: More intuitive handling of isort:skip_file comments on streams.
   - Implemented #1737: Support for using action comments to avoid adding imports to individual files.
   - Implemented #1750: Ability to customize output format lines.
+  - Implemented #1732: Support for custom sort functions.
   - Fixed (https://github.com/PyCQA/isort/pull/1695): added imports being added to doc string in some cases.
   - Fixed (https://github.com/PyCQA/isort/pull/1714): in rare cases line continuation combined with tabs can output invalid code.
   - Fixed (https://github.com/PyCQA/isort/pull/1726): isort ignores reverse_sort when force_sort_within_sections is true.
diff --git a/example_isort_sorting_plugin/example_isort_sorting_plugin.py b/example_isort_sorting_plugin/example_isort_sorting_plugin.py
new file mode 100644
index 000000000..e0c9eacc5
--- /dev/null
+++ b/example_isort_sorting_plugin/example_isort_sorting_plugin.py
@@ -0,0 +1,6 @@
+from natsort import natsorted
+
+
+def natural_plus(*args, **kwargs) -> str:
+    """An even more natural sorting order for isort using natsort."""
+    return natsorted(*args, **kwargs)
diff --git a/example_isort_sorting_plugin/poetry.lock b/example_isort_sorting_plugin/poetry.lock
new file mode 100644
index 000000000..22307cf8d
--- /dev/null
+++ b/example_isort_sorting_plugin/poetry.lock
@@ -0,0 +1,22 @@
+[[package]]
+name = "natsort"
+version = "7.1.1"
+description = "Simple yet flexible natural sorting in Python."
+category = "main"
+optional = false
+python-versions = ">=3.4"
+
+[package.extras]
+fast = ["fastnumbers (>=2.0.0)"]
+icu = ["PyICU (>=1.0.0)"]
+
+[metadata]
+lock-version = "1.1"
+python-versions = "^3.6"
+content-hash = "7825ed9542cf5a39140d69f2d73e505bfab06f72cf1ef105202bc221681efd1a"
+
+[metadata.files]
+natsort = [
+    {file = "natsort-7.1.1-py3-none-any.whl", hash = "sha256:d0f4fc06ca163fa4a5ef638d9bf111c67f65eedcc7920f98dec08e489045b67e"},
+    {file = "natsort-7.1.1.tar.gz", hash = "sha256:00c603a42365830c4722a2eb7663a25919551217ec09a243d3399fa8dd4ac403"},
+]
diff --git a/example_isort_sorting_plugin/pyproject.toml b/example_isort_sorting_plugin/pyproject.toml
new file mode 100644
index 000000000..ee6e910a4
--- /dev/null
+++ b/example_isort_sorting_plugin/pyproject.toml
@@ -0,0 +1,19 @@
+[tool.poetry]
+name = "example_isort_sorting_plugin"
+version = "0.0.2"
+description = "An example plugin that modifies isorts sorting order to provide an even more natural sort by utilizing natsort."
+authors = ["Timothy Crosley <timothy.crosley@gmail.com>"]
+license = "MIT"
+
+[tool.poetry.plugins."isort.sort_function"]
+natural_plus = "example_isort_sorting_plugin:natural_plus"
+
+[tool.poetry.dependencies]
+python = "^3.6"
+natsort = "^7.1.1"
+
+[tool.poetry.dev-dependencies]
+
+[build-system]
+requires = ["poetry>=0.12"]
+build-backend = "poetry.masonry.api"
diff --git a/example_shared_isort_profile/poetry.lock b/example_shared_isort_profile/poetry.lock
index 12fbad913..f6de59971 100644
--- a/example_shared_isort_profile/poetry.lock
+++ b/example_shared_isort_profile/poetry.lock
@@ -1,7 +1,8 @@
 package = []
 
 [metadata]
-content-hash = "8165d934e932435bf4742b9198674202413b43524911713d5c7c55cb8d314618"
-python-versions = "^3.5"
+lock-version = "1.1"
+python-versions = "^3.6"
+content-hash = "ae1f216c71b9b712a5c479d19bf075b718c35d9248fd89cb1eb7624528ec5ad1"
 
 [metadata.files]
diff --git a/isort/exceptions.py b/isort/exceptions.py
index 3a54d6429..275dc424d 100644
--- a/isort/exceptions.py
+++ b/isort/exceptions.py
@@ -1,6 +1,6 @@
 """All isort specific exception classes should be defined here"""
 from pathlib import Path
-from typing import Any, Dict, Union
+from typing import Any, Dict, List, Union
 
 from .profiles import profiles
 
@@ -82,6 +82,18 @@ def __init__(self, profile: str):
         self.profile = profile
 
 
+class SortingFunctionDoesNotExist(ISortError):
+    """Raised when the specified sorting function isn't available"""
+
+    def __init__(self, sort_order: str, available_sort_orders: List[str]):
+        super().__init__(
+            f"Specified sort_order of {sort_order} does not exist. "
+            f"Available sort_orders: {','.join(available_sort_orders)}."
+        )
+        self.sort_order = sort_order
+        self.available_sort_orders = available_sort_orders
+
+
 class FormattingPluginDoesNotExist(ISortError):
     """Raised when a formatting plugin is set by the user that doesn't exist"""
 
diff --git a/isort/main.py b/isort/main.py
index e8af743fe..a57b3fd28 100644
--- a/isort/main.py
+++ b/isort/main.py
@@ -585,8 +585,8 @@ def _build_arg_parser() -> argparse.ArgumentParser:
     output_group.add_argument(
         "--sort-order",
         dest="sort_order",
-        choices=["default", "pythonic"],
-        help="Use natural language or pythonic sorting.",
+        help="Specify sorting function. Can be built in (natural[default] = force numbers "
+        "to be sequential, native = Python's built-in sorted function) or an installable plugin.",
     )
     inline_args_group.add_argument(
         "--sl",
diff --git a/isort/settings.py b/isort/settings.py
index e4c32cab3..9eafb8644 100644
--- a/isort/settings.py
+++ b/isort/settings.py
@@ -30,13 +30,14 @@
 )
 from warnings import warn
 
-from . import stdlibs
+from . import sorting, stdlibs
 from ._future import dataclass, field
 from ._vendored import toml  # type: ignore
 from .exceptions import (
     FormattingPluginDoesNotExist,
     InvalidSettingsPath,
     ProfileDoesNotExist,
+    SortingFunctionDoesNotExist,
     UnsupportedSettings,
 )
 from .profiles import profiles
@@ -232,7 +233,7 @@ class _Config:
     git_ignore: Dict[Path, Set[Path]] = field(default_factory=dict)
     format_error: str = "{error}: {message}"
     format_success: str = "{success}: {message}"
-    sort_order: str = "default"
+    sort_order: str = "natural"
 
     def __post_init__(self) -> None:
         py_version = self.py_version
@@ -294,6 +295,7 @@ def __init__(
         self._section_comments: Optional[Tuple[str, ...]] = None
         self._skips: Optional[FrozenSet[str]] = None
         self._skip_globs: Optional[FrozenSet[str]] = None
+        self._sorting_function: Optional[Callable[..., List[str]]] = None
 
         if config:
             config_vars = vars(config).copy()
@@ -303,6 +305,7 @@ def __init__(
             config_vars.pop("_section_comments")
             config_vars.pop("_skips")
             config_vars.pop("_skip_globs")
+            config_vars.pop("_sorting_function")
             super().__init__(**config_vars)  # type: ignore
             return
 
@@ -651,6 +654,29 @@ def skip_globs(self) -> FrozenSet[str]:
         self._skip_globs = self.skip_glob.union(self.extend_skip_glob)
         return self._skip_globs
 
+    @property
+    def sorting_function(self) -> Callable[..., List[str]]:
+        if self._sorting_function is not None:
+            return self._sorting_function
+
+        if self.sort_order == "natural":
+            self._sorting_function = sorting.naturally
+        elif self.sort_order == "native":
+            self._sorting_function = sorted
+        else:
+            available_sort_orders = ["natural", "native"]
+            import pkg_resources
+
+            for sort_plugin in pkg_resources.iter_entry_points("isort.sort_function"):
+                available_sort_orders.append(sort_plugin.name)
+                if sort_plugin.name == self.sort_order:
+                    self._sorting_function = sort_plugin.load()
+                    break
+            else:
+                raise SortingFunctionDoesNotExist(self.sort_order, available_sort_orders)
+
+        return self._sorting_function
+
     def _parse_known_pattern(self, pattern: str) -> List[str]:
         """Expand pattern if identified as a directory and return found sub packages"""
         if pattern.endswith(os.path.sep):
diff --git a/isort/sorting.py b/isort/sorting.py
index 60727662f..22fdc3804 100644
--- a/isort/sorting.py
+++ b/isort/sorting.py
@@ -1,7 +1,10 @@
 import re
-from typing import Any, Callable, Iterable, List, Optional
+from typing import TYPE_CHECKING, Any, Callable, Iterable, List, Optional
 
-from .settings import Config
+if TYPE_CHECKING:
+    from .settings import Config
+else:
+    Config = Any
 
 _import_line_intro_re = re.compile("^(?:from|import) ")
 _import_line_midline_import_re = re.compile(" import ")
@@ -102,10 +105,7 @@ def sort(
     key: Optional[Callable[[str], Any]] = None,
     reverse: bool = False,
 ) -> List[str]:
-    sorting_func: Callable[..., List[str]] = naturally
-    if config.sort_order == "pythonic":
-        sorting_func = sorted
-    return sorting_func(to_sort, key=key, reverse=reverse)
+    return config.sorting_function(to_sort, key=key, reverse=reverse)
 
 
 def naturally(
diff --git a/poetry.lock b/poetry.lock
index 492deaf67..27358a06b 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -287,6 +287,17 @@ python-versions = ">=3.6,<4.0"
 black = ">=20.08b1,<21.0"
 isort = ">=5.1.4,<6.0.0"
 
+[[package]]
+name = "example-isort-sorting-plugin"
+version = "0.0.2"
+description = "An example plugin that modifies isorts sorting order to provide an even more natural sort by utilizing natsort."
+category = "dev"
+optional = false
+python-versions = ">=3.6,<4.0"
+
+[package.dependencies]
+natsort = ">=7.1.1,<8.0.0"
+
 [[package]]
 name = "example-shared-isort-profile"
 version = "0.0.1"
@@ -397,11 +408,11 @@ gitdb = ">=4.0.1"
 
 [[package]]
 name = "gitpython"
-version = "3.1.17"
+version = "3.1.18"
 description = "Python Git Library"
 category = "dev"
 optional = false
-python-versions = ">=3.5"
+python-versions = ">=3.6"
 
 [package.dependencies]
 gitdb = ">=4.0.1,<5"
@@ -868,6 +879,18 @@ category = "dev"
 optional = false
 python-versions = "*"
 
+[[package]]
+name = "natsort"
+version = "7.1.1"
+description = "Simple yet flexible natural sorting in Python."
+category = "dev"
+optional = false
+python-versions = ">=3.4"
+
+[package.extras]
+fast = ["fastnumbers (>=2.0.0)"]
+icu = ["PyICU (>=1.0.0)"]
+
 [[package]]
 name = "nodeenv"
 version = "1.6.0"
@@ -1117,11 +1140,11 @@ virtualenv = ">=20.0.8"
 
 [[package]]
 name = "prompt-toolkit"
-version = "3.0.3"
+version = "3.0.19"
 description = "Library for building powerful interactive command lines in Python"
 category = "dev"
 optional = false
-python-versions = ">=3.6"
+python-versions = ">=3.6.1"
 
 [package.dependencies]
 wcwidth = "*"
@@ -1160,19 +1183,19 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [[package]]
 name = "pydantic"
-version = "1.7.4"
+version = "1.8.2"
 description = "Data validation and settings management using python 3.6 type hinting"
 category = "dev"
 optional = false
-python-versions = ">=3.6"
+python-versions = ">=3.6.1"
 
 [package.dependencies]
 dataclasses = {version = ">=0.6", markers = "python_version < \"3.7\""}
+typing-extensions = ">=3.7.4.3"
 
 [package.extras]
 dotenv = ["python-dotenv (>=0.10.4)"]
 email = ["email-validator (>=1.0.3)"]
-typing_extensions = ["typing-extensions (>=3.7.2)"]
 
 [[package]]
 name = "pydocstyle"
@@ -1571,7 +1594,7 @@ doc = ["mkdocs (>=1.1.2,<2.0.0)", "mkdocs-material (>=5.4.0,<6.0.0)", "markdown-
 
 [[package]]
 name = "types-pkg-resources"
-version = "0.1.2"
+version = "0.1.3"
 description = "Typing stubs for pkg_resources"
 category = "dev"
 optional = false
@@ -1715,8 +1738,8 @@ requirements_deprecated_finder = ["pipreqs", "pip-api"]
 
 [metadata]
 lock-version = "1.1"
-python-versions = "^3.6.1"
-content-hash = "069575195bc09e4d3ac30c5600a5ac8a991c64a4a586eaf8339f6d3137cd18e9"
+python-versions = ">=3.6.1,<4.0"
+content-hash = "f9e26ab53135b8de55863d9138e5ebd78764d8d5172199ad95c516b8383b4bee"
 
 [metadata.files]
 appdirs = [
@@ -1800,6 +1823,9 @@ coverage = [
     {file = "coverage-5.5-cp27-cp27mu-manylinux1_x86_64.whl", hash = "sha256:8963a499849a1fc54b35b1c9f162f4108017b2e6db2c46c1bed93a72262ed083"},
     {file = "coverage-5.5-cp27-cp27mu-manylinux2010_i686.whl", hash = "sha256:869a64f53488f40fa5b5b9dcb9e9b2962a66a87dab37790f3fcfb5144b996ef5"},
     {file = "coverage-5.5-cp27-cp27mu-manylinux2010_x86_64.whl", hash = "sha256:4a7697d8cb0f27399b0e393c0b90f0f1e40c82023ea4d45d22bce7032a5d7b81"},
+    {file = "coverage-5.5-cp310-cp310-macosx_10_14_x86_64.whl", hash = "sha256:8d0a0725ad7c1a0bcd8d1b437e191107d457e2ec1084b9f190630a4fb1af78e6"},
+    {file = "coverage-5.5-cp310-cp310-manylinux1_x86_64.whl", hash = "sha256:51cb9476a3987c8967ebab3f0fe144819781fca264f57f89760037a2ea191cb0"},
+    {file = "coverage-5.5-cp310-cp310-win_amd64.whl", hash = "sha256:c0891a6a97b09c1f3e073a890514d5012eb256845c451bd48f7968ef939bf4ae"},
     {file = "coverage-5.5-cp35-cp35m-macosx_10_9_x86_64.whl", hash = "sha256:3487286bc29a5aa4b93a072e9592f22254291ce96a9fbc5251f566b6b7343cdb"},
     {file = "coverage-5.5-cp35-cp35m-manylinux1_i686.whl", hash = "sha256:deee1077aae10d8fa88cb02c845cfba9b62c55e1183f52f6ae6a2df6a2187160"},
     {file = "coverage-5.5-cp35-cp35m-manylinux1_x86_64.whl", hash = "sha256:f11642dddbb0253cc8853254301b51390ba0081750a8ac03f20ea8103f0c56b6"},
@@ -1869,6 +1895,10 @@ example-isort-formatting-plugin = [
     {file = "example_isort_formatting_plugin-0.0.2-py3-none-any.whl", hash = "sha256:ce428ab5deb4719e4bec56eae63978ff2d9c20dc2c2aa7cc39ece61044153db7"},
     {file = "example_isort_formatting_plugin-0.0.2.tar.gz", hash = "sha256:8cb6401c9efe2f97ba3e776439cb647ee964dc7880bd9790b0324be2c7a55907"},
 ]
+example-isort-sorting-plugin = [
+    {file = "example_isort_sorting_plugin-0.0.2-py3-none-any.whl", hash = "sha256:108d3d66bb5fd8ef51fde9bbab3207d2b6176b5df803dd88e31f2f48b8975b59"},
+    {file = "example_isort_sorting_plugin-0.0.2.tar.gz", hash = "sha256:ea5ac1f9233023d6d949940ea00d08e2f8ade6e7acdebafe1e82acdf1ef1d969"},
+]
 example-shared-isort-profile = [
     {file = "example_shared_isort_profile-0.0.1-py3-none-any.whl", hash = "sha256:3fa3e2d093e68285fc7893704b727791ed3e0969d07bdd2733e366303d1a2582"},
     {file = "example_shared_isort_profile-0.0.1.tar.gz", hash = "sha256:fc2a0fa892611d6c1c2060dc0ca8e511e3f65fad8e4e449e8a375ef49549e710"},
@@ -1921,8 +1951,8 @@ gitdb2 = [
     {file = "gitdb2-4.0.2.tar.gz", hash = "sha256:0986cb4003de743f2b3aba4c828edd1ab58ce98e1c4a8acf72ef02760d4beb4e"},
 ]
 gitpython = [
-    {file = "GitPython-3.1.17-py3-none-any.whl", hash = "sha256:29fe82050709760081f588dd50ce83504feddbebdc4da6956d02351552b1c135"},
-    {file = "GitPython-3.1.17.tar.gz", hash = "sha256:ee24bdc93dce357630764db659edaf6b8d664d4ff5447ccfeedd2dc5c253f41e"},
+    {file = "GitPython-3.1.18-py3-none-any.whl", hash = "sha256:fce760879cd2aebd2991b3542876dc5c4a909b30c9d69dfc488e504a8db37ee8"},
+    {file = "GitPython-3.1.18.tar.gz", hash = "sha256:b838a895977b45ab6f0cc926a9045c8d1c44e2b653c1fcc39fe91f42c6e8f05b"},
 ]
 h11 = [
     {file = "h11-0.9.0-py2.py3-none-any.whl", hash = "sha256:4bc6d6a1238b7615b266ada57e0618568066f57dd6fa967d1290ec9309b2f2f1"},
@@ -2036,6 +2066,7 @@ livereload = [
     {file = "livereload-2.6.3.tar.gz", hash = "sha256:776f2f865e59fde56490a56bcc6773b6917366bce0c267c60ee8aaf1a0959869"},
 ]
 mako = [
+    {file = "Mako-1.1.4-py2.py3-none-any.whl", hash = "sha256:aea166356da44b9b830c8023cd9b557fa856bd8b4035d6de771ca027dfc5cc6e"},
     {file = "Mako-1.1.4.tar.gz", hash = "sha256:17831f0b7087c313c0ffae2bcbbd3c1d5ba9eeac9c38f2eb7b50e8c99fe9d5ab"},
 ]
 markdown = [
@@ -2127,6 +2158,10 @@ mypy-extensions = [
     {file = "mypy_extensions-0.4.3-py2.py3-none-any.whl", hash = "sha256:090fedd75945a69ae91ce1303b5824f428daf5a028d2f6ab8a299250a846f15d"},
     {file = "mypy_extensions-0.4.3.tar.gz", hash = "sha256:2d82818f5bb3e369420cb3c4060a7970edba416647068eb4c5343488a6c604a8"},
 ]
+natsort = [
+    {file = "natsort-7.1.1-py3-none-any.whl", hash = "sha256:d0f4fc06ca163fa4a5ef638d9bf111c67f65eedcc7920f98dec08e489045b67e"},
+    {file = "natsort-7.1.1.tar.gz", hash = "sha256:00c603a42365830c4722a2eb7663a25919551217ec09a243d3399fa8dd4ac403"},
+]
 nodeenv = [
     {file = "nodeenv-1.6.0-py2.py3-none-any.whl", hash = "sha256:621e6b7076565ddcacd2db0294c0381e01fd28945ab36bcf00f41c5daf63bef7"},
     {file = "nodeenv-1.6.0.tar.gz", hash = "sha256:3ef13ff90291ba2a4a7a4ff9a979b63ffdd00a464dbe04acf0ea6471517a4c2b"},
@@ -2243,8 +2278,8 @@ pre-commit = [
     {file = "pre_commit-2.13.0.tar.gz", hash = "sha256:764972c60693dc668ba8e86eb29654ec3144501310f7198742a767bec385a378"},
 ]
 prompt-toolkit = [
-    {file = "prompt_toolkit-3.0.3-py3-none-any.whl", hash = "sha256:c93e53af97f630f12f5f62a3274e79527936ed466f038953dfa379d4941f651a"},
-    {file = "prompt_toolkit-3.0.3.tar.gz", hash = "sha256:a402e9bf468b63314e37460b68ba68243d55b2f8c4d0192f85a019af3945050e"},
+    {file = "prompt_toolkit-3.0.19-py3-none-any.whl", hash = "sha256:7089d8d2938043508aa9420ec18ce0922885304cddae87fb96eebca942299f88"},
+    {file = "prompt_toolkit-3.0.19.tar.gz", hash = "sha256:08360ee3a3148bdb5163621709ee322ec34fc4375099afa4bbf751e9b7b7fa4f"},
 ]
 ptyprocess = [
     {file = "ptyprocess-0.7.0-py2.py3-none-any.whl", hash = "sha256:4b41f3967fce3af57cc7e94b888626c18bf37a083e3651ca8feeb66d492fef35"},
@@ -2262,28 +2297,28 @@ pycodestyle = [
     {file = "pycodestyle-2.7.0.tar.gz", hash = "sha256:c389c1d06bf7904078ca03399a4816f974a1d590090fecea0c63ec26ebaf1cef"},
 ]
 pydantic = [
-    {file = "pydantic-1.7.4-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:3c60039e84552442defbcb5d56711ef0e057028ca7bfc559374917408a88d84e"},
-    {file = "pydantic-1.7.4-cp36-cp36m-manylinux1_i686.whl", hash = "sha256:6e7e314acb170e143c6f3912f93f2ec80a96aa2009ee681356b7ce20d57e5c62"},
-    {file = "pydantic-1.7.4-cp36-cp36m-manylinux2014_i686.whl", hash = "sha256:8ef77cd17b73b5ba46788d040c0e820e49a2d80cfcd66fda3ba8be31094fd146"},
-    {file = "pydantic-1.7.4-cp36-cp36m-manylinux2014_x86_64.whl", hash = "sha256:115d8aa6f257a1d469c66b6bfc7aaf04cd87c25095f24542065c68ebcb42fe63"},
-    {file = "pydantic-1.7.4-cp36-cp36m-win_amd64.whl", hash = "sha256:66757d4e1eab69a3cfd3114480cc1d72b6dd847c4d30e676ae838c6740fdd146"},
-    {file = "pydantic-1.7.4-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:4c92863263e4bd89e4f9cf1ab70d918170c51bd96305fe7b00853d80660acb26"},
-    {file = "pydantic-1.7.4-cp37-cp37m-manylinux1_i686.whl", hash = "sha256:3b8154babf30a5e0fa3aa91f188356763749d9b30f7f211fafb247d4256d7877"},
-    {file = "pydantic-1.7.4-cp37-cp37m-manylinux2014_i686.whl", hash = "sha256:80cc46378505f7ff202879dcffe4bfbf776c15675028f6e08d1d10bdfbb168ac"},
-    {file = "pydantic-1.7.4-cp37-cp37m-manylinux2014_x86_64.whl", hash = "sha256:dda60d7878a5af2d8560c55c7c47a8908344aa78d32ec1c02d742ede09c534df"},
-    {file = "pydantic-1.7.4-cp37-cp37m-win_amd64.whl", hash = "sha256:4c1979d5cc3e14b35f0825caddea5a243dd6085e2a7539c006bc46997ef7a61a"},
-    {file = "pydantic-1.7.4-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:8857576600c32aa488f18d30833aa833b54a48e3bab3adb6de97e463af71f8f8"},
-    {file = "pydantic-1.7.4-cp38-cp38-manylinux1_i686.whl", hash = "sha256:1f86d4da363badb39426a0ff494bf1d8510cd2f7274f460eee37bdbf2fd495ec"},
-    {file = "pydantic-1.7.4-cp38-cp38-manylinux2014_i686.whl", hash = "sha256:3ea1256a9e782149381e8200119f3e2edea7cd6b123f1c79ab4bbefe4d9ba2c9"},
-    {file = "pydantic-1.7.4-cp38-cp38-manylinux2014_x86_64.whl", hash = "sha256:e28455b42a0465a7bf2cde5eab530389226ce7dc779de28d17b8377245982b1e"},
-    {file = "pydantic-1.7.4-cp38-cp38-win_amd64.whl", hash = "sha256:47c5b1d44934375a3311891cabd450c150a31cf5c22e84aa172967bf186718be"},
-    {file = "pydantic-1.7.4-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:00250e5123dd0b123ff72be0e1b69140e0b0b9e404d15be3846b77c6f1b1e387"},
-    {file = "pydantic-1.7.4-cp39-cp39-manylinux1_i686.whl", hash = "sha256:d24aa3f7f791a023888976b600f2f389d3713e4f23b7a4c88217d3fce61cdffc"},
-    {file = "pydantic-1.7.4-cp39-cp39-manylinux2014_i686.whl", hash = "sha256:2c44a9afd4c4c850885436a4209376857989aaf0853c7b118bb2e628d4b78c4e"},
-    {file = "pydantic-1.7.4-cp39-cp39-manylinux2014_x86_64.whl", hash = "sha256:e87edd753da0ca1d44e308a1b1034859ffeab1f4a4492276bff9e1c3230db4fe"},
-    {file = "pydantic-1.7.4-cp39-cp39-win_amd64.whl", hash = "sha256:a3026ee105b5360855e500b4abf1a1d0b034d88e75a2d0d66a4c35e60858e15b"},
-    {file = "pydantic-1.7.4-py3-none-any.whl", hash = "sha256:a82385c6d5a77e3387e94612e3e34b77e13c39ff1295c26e3ba664e7b98073e2"},
-    {file = "pydantic-1.7.4.tar.gz", hash = "sha256:0a1abcbd525fbb52da58c813d54c2ec706c31a91afdb75411a73dd1dec036595"},
+    {file = "pydantic-1.8.2-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:05ddfd37c1720c392f4e0d43c484217b7521558302e7069ce8d318438d297739"},
+    {file = "pydantic-1.8.2-cp36-cp36m-manylinux1_i686.whl", hash = "sha256:a7c6002203fe2c5a1b5cbb141bb85060cbff88c2d78eccbc72d97eb7022c43e4"},
+    {file = "pydantic-1.8.2-cp36-cp36m-manylinux2014_i686.whl", hash = "sha256:589eb6cd6361e8ac341db97602eb7f354551482368a37f4fd086c0733548308e"},
+    {file = "pydantic-1.8.2-cp36-cp36m-manylinux2014_x86_64.whl", hash = "sha256:10e5622224245941efc193ad1d159887872776df7a8fd592ed746aa25d071840"},
+    {file = "pydantic-1.8.2-cp36-cp36m-win_amd64.whl", hash = "sha256:99a9fc39470010c45c161a1dc584997f1feb13f689ecf645f59bb4ba623e586b"},
+    {file = "pydantic-1.8.2-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:a83db7205f60c6a86f2c44a61791d993dff4b73135df1973ecd9eed5ea0bda20"},
+    {file = "pydantic-1.8.2-cp37-cp37m-manylinux1_i686.whl", hash = "sha256:41b542c0b3c42dc17da70554bc6f38cbc30d7066d2c2815a94499b5684582ecb"},
+    {file = "pydantic-1.8.2-cp37-cp37m-manylinux2014_i686.whl", hash = "sha256:ea5cb40a3b23b3265f6325727ddfc45141b08ed665458be8c6285e7b85bd73a1"},
+    {file = "pydantic-1.8.2-cp37-cp37m-manylinux2014_x86_64.whl", hash = "sha256:18b5ea242dd3e62dbf89b2b0ec9ba6c7b5abaf6af85b95a97b00279f65845a23"},
+    {file = "pydantic-1.8.2-cp37-cp37m-win_amd64.whl", hash = "sha256:234a6c19f1c14e25e362cb05c68afb7f183eb931dd3cd4605eafff055ebbf287"},
+    {file = "pydantic-1.8.2-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:021ea0e4133e8c824775a0cfe098677acf6fa5a3cbf9206a376eed3fc09302cd"},
+    {file = "pydantic-1.8.2-cp38-cp38-manylinux1_i686.whl", hash = "sha256:e710876437bc07bd414ff453ac8ec63d219e7690128d925c6e82889d674bb505"},
+    {file = "pydantic-1.8.2-cp38-cp38-manylinux2014_i686.whl", hash = "sha256:ac8eed4ca3bd3aadc58a13c2aa93cd8a884bcf21cb019f8cfecaae3b6ce3746e"},
+    {file = "pydantic-1.8.2-cp38-cp38-manylinux2014_x86_64.whl", hash = "sha256:4a03cbbe743e9c7247ceae6f0d8898f7a64bb65800a45cbdc52d65e370570820"},
+    {file = "pydantic-1.8.2-cp38-cp38-win_amd64.whl", hash = "sha256:8621559dcf5afacf0069ed194278f35c255dc1a1385c28b32dd6c110fd6531b3"},
+    {file = "pydantic-1.8.2-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:8b223557f9510cf0bfd8b01316bf6dd281cf41826607eada99662f5e4963f316"},
+    {file = "pydantic-1.8.2-cp39-cp39-manylinux1_i686.whl", hash = "sha256:244ad78eeb388a43b0c927e74d3af78008e944074b7d0f4f696ddd5b2af43c62"},
+    {file = "pydantic-1.8.2-cp39-cp39-manylinux2014_i686.whl", hash = "sha256:05ef5246a7ffd2ce12a619cbb29f3307b7c4509307b1b49f456657b43529dc6f"},
+    {file = "pydantic-1.8.2-cp39-cp39-manylinux2014_x86_64.whl", hash = "sha256:54cd5121383f4a461ff7644c7ca20c0419d58052db70d8791eacbbe31528916b"},
+    {file = "pydantic-1.8.2-cp39-cp39-win_amd64.whl", hash = "sha256:4be75bebf676a5f0f87937c6ddb061fa39cbea067240d98e298508c1bda6f3f3"},
+    {file = "pydantic-1.8.2-py3-none-any.whl", hash = "sha256:fec866a0b59f372b7e776f2d7308511784dace622e0992a0b59ea3ccee0ae833"},
+    {file = "pydantic-1.8.2.tar.gz", hash = "sha256:26464e57ccaafe72b7ad156fdaa4e9b9ef051f69e175dbbb463283000c05ab7b"},
 ]
 pydocstyle = [
     {file = "pydocstyle-6.1.1-py3-none-any.whl", hash = "sha256:6987826d6775056839940041beef5c08cc7e3d71d63149b48e36727f70144dc4"},
@@ -2340,18 +2375,26 @@ pyyaml = [
     {file = "PyYAML-5.4.1-cp27-cp27mu-manylinux1_x86_64.whl", hash = "sha256:bb4191dfc9306777bc594117aee052446b3fa88737cd13b7188d0e7aa8162185"},
     {file = "PyYAML-5.4.1-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:6c78645d400265a062508ae399b60b8c167bf003db364ecb26dcab2bda048253"},
     {file = "PyYAML-5.4.1-cp36-cp36m-manylinux1_x86_64.whl", hash = "sha256:4e0583d24c881e14342eaf4ec5fbc97f934b999a6828693a99157fde912540cc"},
+    {file = "PyYAML-5.4.1-cp36-cp36m-manylinux2014_aarch64.whl", hash = "sha256:72a01f726a9c7851ca9bfad6fd09ca4e090a023c00945ea05ba1638c09dc3347"},
+    {file = "PyYAML-5.4.1-cp36-cp36m-manylinux2014_s390x.whl", hash = "sha256:895f61ef02e8fed38159bb70f7e100e00f471eae2bc838cd0f4ebb21e28f8541"},
     {file = "PyYAML-5.4.1-cp36-cp36m-win32.whl", hash = "sha256:3bd0e463264cf257d1ffd2e40223b197271046d09dadf73a0fe82b9c1fc385a5"},
     {file = "PyYAML-5.4.1-cp36-cp36m-win_amd64.whl", hash = "sha256:e4fac90784481d221a8e4b1162afa7c47ed953be40d31ab4629ae917510051df"},
     {file = "PyYAML-5.4.1-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:5accb17103e43963b80e6f837831f38d314a0495500067cb25afab2e8d7a4018"},
     {file = "PyYAML-5.4.1-cp37-cp37m-manylinux1_x86_64.whl", hash = "sha256:e1d4970ea66be07ae37a3c2e48b5ec63f7ba6804bdddfdbd3cfd954d25a82e63"},
+    {file = "PyYAML-5.4.1-cp37-cp37m-manylinux2014_aarch64.whl", hash = "sha256:cb333c16912324fd5f769fff6bc5de372e9e7a202247b48870bc251ed40239aa"},
+    {file = "PyYAML-5.4.1-cp37-cp37m-manylinux2014_s390x.whl", hash = "sha256:fe69978f3f768926cfa37b867e3843918e012cf83f680806599ddce33c2c68b0"},
     {file = "PyYAML-5.4.1-cp37-cp37m-win32.whl", hash = "sha256:dd5de0646207f053eb0d6c74ae45ba98c3395a571a2891858e87df7c9b9bd51b"},
     {file = "PyYAML-5.4.1-cp37-cp37m-win_amd64.whl", hash = "sha256:08682f6b72c722394747bddaf0aa62277e02557c0fd1c42cb853016a38f8dedf"},
     {file = "PyYAML-5.4.1-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:d2d9808ea7b4af864f35ea216be506ecec180628aced0704e34aca0b040ffe46"},
     {file = "PyYAML-5.4.1-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:8c1be557ee92a20f184922c7b6424e8ab6691788e6d86137c5d93c1a6ec1b8fb"},
+    {file = "PyYAML-5.4.1-cp38-cp38-manylinux2014_aarch64.whl", hash = "sha256:fd7f6999a8070df521b6384004ef42833b9bd62cfee11a09bda1079b4b704247"},
+    {file = "PyYAML-5.4.1-cp38-cp38-manylinux2014_s390x.whl", hash = "sha256:bfb51918d4ff3d77c1c856a9699f8492c612cde32fd3bcd344af9be34999bfdc"},
     {file = "PyYAML-5.4.1-cp38-cp38-win32.whl", hash = "sha256:fa5ae20527d8e831e8230cbffd9f8fe952815b2b7dae6ffec25318803a7528fc"},
     {file = "PyYAML-5.4.1-cp38-cp38-win_amd64.whl", hash = "sha256:0f5f5786c0e09baddcd8b4b45f20a7b5d61a7e7e99846e3c799b05c7c53fa696"},
     {file = "PyYAML-5.4.1-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:294db365efa064d00b8d1ef65d8ea2c3426ac366c0c4368d930bf1c5fb497f77"},
     {file = "PyYAML-5.4.1-cp39-cp39-manylinux1_x86_64.whl", hash = "sha256:74c1485f7707cf707a7aef42ef6322b8f97921bd89be2ab6317fd782c2d53183"},
+    {file = "PyYAML-5.4.1-cp39-cp39-manylinux2014_aarch64.whl", hash = "sha256:d483ad4e639292c90170eb6f7783ad19490e7a8defb3e46f97dfe4bacae89122"},
+    {file = "PyYAML-5.4.1-cp39-cp39-manylinux2014_s390x.whl", hash = "sha256:fdc842473cd33f45ff6bce46aea678a54e3d21f1b61a7750ce3c498eedfe25d6"},
     {file = "PyYAML-5.4.1-cp39-cp39-win32.whl", hash = "sha256:49d4cdd9065b9b6e206d0595fee27a96b5dd22618e7520c33204a4a3239d5b10"},
     {file = "PyYAML-5.4.1-cp39-cp39-win_amd64.whl", hash = "sha256:c20cfa2d49991c8b4147af39859b167664f2ad4561704ee74c1de03318e898db"},
     {file = "PyYAML-5.4.1.tar.gz", hash = "sha256:607774cbba28732bfa802b54baa7484215f530991055bb562efbed5b2f20a45e"},
@@ -2543,7 +2586,8 @@ typer = [
     {file = "typer-0.3.2.tar.gz", hash = "sha256:5455d750122cff96745b0dec87368f56d023725a7ebc9d2e54dd23dc86816303"},
 ]
 types-pkg-resources = [
-    {file = "types_pkg_resources-0.1.2-py2.py3-none-any.whl", hash = "sha256:42d640500de564f1ccc21f918117afadf78039e4fa7f513c647ccf742d609aeb"},
+    {file = "types-pkg_resources-0.1.3.tar.gz", hash = "sha256:834a9b8d3dbea343562fd99d5d3359a726f6bf9d3733bccd2b4f3096fbab9dae"},
+    {file = "types_pkg_resources-0.1.3-py2.py3-none-any.whl", hash = "sha256:0cb9972cee992249f93fff1a491bf2dc3ce674e5a1926e27d4f0866f7d9b6d9c"},
 ]
 typing-extensions = [
     {file = "typing_extensions-3.10.0.0-py2-none-any.whl", hash = "sha256:0ac0f89795dd19de6b97debb0c6af1c70987fd80a2d62d1958f7e56fcc31b497"},
diff --git a/pyproject.toml b/pyproject.toml
index f339ef46a..301a54a78 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -82,6 +82,7 @@ gitdb2 = "^4.0.2"
 httpx = "^0.13.3"
 example_shared_isort_profile = "^0.0.1"
 example_isort_formatting_plugin = "^0.0.2"
+example_isort_sorting_plugin = "^0.0.2"
 flake8 = "^3.8.4"
 hypothesis = "^6.10.1"
 libcst = "^0.3.18"
diff --git a/scripts/clean.sh b/scripts/clean.sh
index 7d446611e..632a023c2 100755
--- a/scripts/clean.sh
+++ b/scripts/clean.sh
@@ -2,6 +2,6 @@
 set -euxo pipefail
 
 poetry run isort --profile hug isort/ tests/ scripts/
-poetry run isort --profile hug example_isort_formatting_plugin/
+poetry run isort --profile hug example_*/
 poetry run black isort/ tests/ scripts/
-poetry run black example_isort_formatting_plugin/
+poetry run black example_*/
diff --git a/scripts/lint.sh b/scripts/lint.sh
index 6783976fc..9af835d0a 100755
--- a/scripts/lint.sh
+++ b/scripts/lint.sh
@@ -5,7 +5,7 @@ poetry run cruft check
 poetry run mypy -p isort
 poetry run black --target-version py36 --check .
 poetry run isort --profile hug --check --diff isort/ tests/
-poetry run isort --profile hug --check --diff example_isort_formatting_plugin/
+poetry run isort --profile hug --check --diff example_*/
 poetry run flake8 isort/ tests/
 poetry run safety check -i 39462 -i 40291
 poetry run bandit -r isort/ -x isort/_vendored
diff --git a/tests/unit/test_exceptions.py b/tests/unit/test_exceptions.py
index d9eae8bf8..2cd17aa11 100644
--- a/tests/unit/test_exceptions.py
+++ b/tests/unit/test_exceptions.py
@@ -58,6 +58,15 @@ def test_variables(self):
         assert self.instance.profile == "profile"
 
 
+class TestSortingFunctionDoesNotExist(TestISortError):
+    def setup_class(self):
+        self.instance = exceptions.SortingFunctionDoesNotExist("round", ["square", "peg"])
+
+    def test_variables(self):
+        assert self.instance.sort_order == "round"
+        assert self.instance.available_sort_orders == ["square", "peg"]
+
+
 class TestLiteralParsingFailure(TestISortError):
     def setup_class(self):
         self.instance = exceptions.LiteralParsingFailure("x = [", SyntaxError)
diff --git a/tests/unit/test_isort.py b/tests/unit/test_isort.py
index 9593c42c8..0599925e7 100644
--- a/tests/unit/test_isort.py
+++ b/tests/unit/test_isort.py
@@ -5236,22 +5236,3 @@ def seekable(self):
     test_input = NonSeekableTestStream("import m2\n" "import m1\n" "not_import = 7")
     identified_imports = list(map(str, api.find_imports_in_stream(test_input)))
     assert identified_imports == [":1 import m2", ":2 import m1"]
-
-
-def test_sort_pythonic() -> None:
-    """ Test a plugged-in default python sort with packages/modules containing numbers. """
-    test_input = (
-        "from bob2.apples2 import aardvark as aardvark2\n"
-        "from bob.apples import aardvark \n"
-        "import module9\n"
-        "import module10\n"
-        "import module200\n"
-    )
-    test_output = isort.code(test_input, sort_order="pythonic")
-    assert test_output == (
-        "import module10\n"
-        "import module200\n"
-        "import module9\n"
-        "from bob.apples import aardvark\n"
-        "from bob2.apples2 import aardvark as aardvark2\n"
-    )
diff --git a/tests/unit/test_ticketed_features.py b/tests/unit/test_ticketed_features.py
index a29700539..dde08be6c 100644
--- a/tests/unit/test_ticketed_features.py
+++ b/tests/unit/test_ticketed_features.py
@@ -1179,3 +1179,45 @@ def test_isort_can_turn_off_import_adds_with_action_comment_issue_1737():
 import os
 """
     )
+
+
+def test_sort_configurable_sort_issue_1732() -> None:
+    """Test support for pluggable isort sort functions."""
+    test_input = (
+        "from bob2.apples2 import aardvark as aardvark2\n"
+        "from bob.apples import aardvark \n"
+        "import module9\n"
+        "import module10\n"
+        "import module200\n"
+    )
+    assert isort.code(test_input, sort_order="native") == (
+        "import module10\n"
+        "import module200\n"
+        "import module9\n"
+        "from bob.apples import aardvark\n"
+        "from bob2.apples2 import aardvark as aardvark2\n"
+    )
+    assert (
+        isort.code(test_input, sort_order="natural")
+        == isort.code(test_input)
+        == (
+            "import module9\n"
+            "import module10\n"
+            "import module200\n"
+            "from bob2.apples2 import aardvark as aardvark2\n"
+            "from bob.apples import aardvark\n"
+        )
+    )
+    assert (
+        isort.code(test_input, sort_order="natural_plus")
+        == isort.code(test_input)
+        == (
+            "import module9\n"
+            "import module10\n"
+            "import module200\n"
+            "from bob2.apples2 import aardvark as aardvark2\n"
+            "from bob.apples import aardvark\n"
+        )
+    )
+    with pytest.raises(exceptions.SortingFunctionDoesNotExist):
+        isort.code(test_input, sort_order="round")