diff --git a/changelog/9636.bugfix.rst b/changelog/9636.bugfix.rst
new file mode 100644
index 00000000000..2288c37ffc7
--- /dev/null
+++ b/changelog/9636.bugfix.rst
@@ -0,0 +1 @@
+The ``pythonpath`` plugin was renamed to ``python_path``. This avoids a conflict with the ``pytest-pythonpath`` plugin.
diff --git a/src/_pytest/config/__init__.py b/src/_pytest/config/__init__.py
index 59c88885df5..f4818c861cf 100644
--- a/src/_pytest/config/__init__.py
+++ b/src/_pytest/config/__init__.py
@@ -254,7 +254,7 @@ def directory_arg(path: str, optname: str) -> str:
     "warnings",
     "logging",
     "reports",
-    "pythonpath",
+    "python_path",
     *(["unraisableexception", "threadexception"] if sys.version_info >= (3, 8) else []),
     "faulthandler",
 )
diff --git a/src/_pytest/pythonpath.py b/src/_pytest/python_path.py
similarity index 100%
rename from src/_pytest/pythonpath.py
rename to src/_pytest/python_path.py
diff --git a/testing/test_config.py b/testing/test_config.py
index bf4b2741eca..8013966f071 100644
--- a/testing/test_config.py
+++ b/testing/test_config.py
@@ -1275,7 +1275,7 @@ def pytest_load_initial_conftests(self):
         ("_pytest.config", "nonwrapper"),
         (m.__module__, "nonwrapper"),
         ("_pytest.legacypath", "nonwrapper"),
-        ("_pytest.pythonpath", "nonwrapper"),
+        ("_pytest.python_path", "nonwrapper"),
         ("_pytest.capture", "wrapper"),
         ("_pytest.warnings", "wrapper"),
     ]
diff --git a/testing/test_pythonpath.py b/testing/test_python_path.py
similarity index 98%
rename from testing/test_pythonpath.py
rename to testing/test_python_path.py
index 97c439ce0c3..5ee0f55e36a 100644
--- a/testing/test_pythonpath.py
+++ b/testing/test_python_path.py
@@ -81,7 +81,7 @@ def test_no_ini(pytester: Pytester, file_structure) -> None:
 
 
 def test_clean_up(pytester: Pytester) -> None:
-    """Test that the pythonpath plugin cleans up after itself."""
+    """Test that the plugin cleans up after itself."""
     # This is tough to test behaviorly because the cleanup really runs last.
     # So the test make several implementation assumptions:
     # - Cleanup is done in pytest_unconfigure().