diff --git a/CHANGES b/CHANGES
index dca1b4a2e40..599fe0ae70f 100644
--- a/CHANGES
+++ b/CHANGES
@@ -22,6 +22,7 @@ Bugs fixed
 * #8085: i18n: Add support for having single text domain
 * #8143: autodoc: AttributeError is raised when False value is passed to
   autodoc_default_options
+* #8103: autodoc: functools.cached_property is not considered as a property
 * #8192: napoleon: description is disappeared when it contains inline literals
 * #8093: The highlight warning has wrong location in some builders (LaTeX,
   singlehtml and so on)
diff --git a/sphinx/util/inspect.py b/sphinx/util/inspect.py
index a5c64f882f7..37997e6b275 100644
--- a/sphinx/util/inspect.py
+++ b/sphinx/util/inspect.py
@@ -304,6 +304,11 @@ def iscoroutinefunction(obj: Any) -> bool:
 
 def isproperty(obj: Any) -> bool:
     """Check if the object is property."""
+    if sys.version_info > (3, 8):
+        from functools import cached_property  # cached_property is available since py3.8
+        if isinstance(obj, cached_property):
+            return True
+
     return isinstance(obj, property)
 
 
diff --git a/tests/roots/test-ext-autodoc/target/cached_property.py b/tests/roots/test-ext-autodoc/target/cached_property.py
new file mode 100644
index 00000000000..63ec09f8eee
--- /dev/null
+++ b/tests/roots/test-ext-autodoc/target/cached_property.py
@@ -0,0 +1,7 @@
+from functools import cached_property
+
+
+class Foo:
+    @cached_property
+    def prop(self) -> int:
+        return 1
diff --git a/tests/test_ext_autodoc.py b/tests/test_ext_autodoc.py
index 90a2ec95a37..1ba64a0a774 100644
--- a/tests/test_ext_autodoc.py
+++ b/tests/test_ext_autodoc.py
@@ -881,6 +881,26 @@ def test_autodoc_descriptor(app):
     ]
 
 
+@pytest.mark.skipif(sys.version_info < (3, 8),
+                    reason='cached_property is available since python3.8.')
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_cached_property(app):
+    options = {"members": None,
+               "undoc-members": True}
+    actual = do_autodoc(app, 'class', 'target.cached_property.Foo', options)
+    assert list(actual) == [
+        '',
+        '.. py:class:: Foo()',
+        '   :module: target.cached_property',
+        '',
+        '',
+        '   .. py:method:: Foo.prop',
+        '      :module: target.cached_property',
+        '      :property:',
+        '',
+    ]
+
+
 @pytest.mark.sphinx('html', testroot='ext-autodoc')
 def test_autodoc_member_order(app):
     # case member-order='bysource'