diff --git a/CHANGES b/CHANGES
index 9547c4bad1f..4e44a3330a1 100644
--- a/CHANGES
+++ b/CHANGES
@@ -25,7 +25,8 @@ Features added
 Bugs fixed
 ----------
 
-* #9866: autodoc: doccoment for the imported class was ignored
+* #9866: autodoc: doccomment for the imported class was ignored
+* #9883: autodoc: doccomment for the alias to mocked object was ignored
 * #9878: mathjax: MathJax configuration is placed after loading MathJax itself
 * #9857: Generated RFC links use outdated base url
 
diff --git a/sphinx/ext/autodoc/__init__.py b/sphinx/ext/autodoc/__init__.py
index 157e57e3ad5..a4d5884e89e 100644
--- a/sphinx/ext/autodoc/__init__.py
+++ b/sphinx/ext/autodoc/__init__.py
@@ -751,7 +751,7 @@ def is_filtered_inherited_member(name: str, obj: Any) -> bool:
                 isprivate = membername.startswith('_')
 
             keep = False
-            if ismock(member):
+            if ismock(member) and (namespace, membername) not in attr_docs:
                 # mocked module or object
                 pass
             elif self.options.exclude_members and membername in self.options.exclude_members:
@@ -2009,7 +2009,8 @@ def add_directive_header(self, sig: str) -> None:
                     self.add_line('   :type: ' + objrepr, sourcename)
 
             try:
-                if self.options.no_value or self.should_suppress_value_header():
+                if (self.options.no_value or self.should_suppress_value_header() or
+                        ismock(self.object)):
                     pass
                 else:
                     objrepr = object_description(self.object)
@@ -2528,11 +2529,11 @@ def is_function_or_method(obj: Any) -> bool:
     @classmethod
     def can_document_member(cls, member: Any, membername: str, isattr: bool, parent: Any
                             ) -> bool:
-        if inspect.isattributedescriptor(member):
+        if isinstance(parent, ModuleDocumenter):
+            return False
+        elif inspect.isattributedescriptor(member):
             return True
-        elif (not isinstance(parent, ModuleDocumenter) and
-              not inspect.isroutine(member) and
-              not isinstance(member, type)):
+        elif not inspect.isroutine(member) and not isinstance(member, type):
             return True
         else:
             return False
@@ -2625,7 +2626,8 @@ def add_directive_header(self, sig: str) -> None:
                     self.add_line('   :type: ' + objrepr, sourcename)
 
             try:
-                if self.options.no_value or self.should_suppress_value_header():
+                if (self.options.no_value or self.should_suppress_value_header() or
+                        ismock(self.object)):
                     pass
                 else:
                     objrepr = object_description(self.object)
diff --git a/sphinx/ext/autodoc/mock.py b/sphinx/ext/autodoc/mock.py
index 62f36da7956..ec8c0108738 100644
--- a/sphinx/ext/autodoc/mock.py
+++ b/sphinx/ext/autodoc/mock.py
@@ -170,7 +170,8 @@ def ismock(subject: Any) -> bool:
     try:
         # check the object is mocked object
         __mro__ = safe_getattr(type(subject), '__mro__', [])
-        if len(__mro__) > 2 and __mro__[1] is _MockObject:
+        if len(__mro__) > 2 and __mro__[-2] is _MockObject:
+            # A mocked object has a MRO that ends with (..., _MockObject, object).
             return True
     except AttributeError:
         pass
diff --git a/tests/roots/test-ext-autodoc/target/need_mocks.py b/tests/roots/test-ext-autodoc/target/need_mocks.py
index a2995418410..6f75dc3802e 100644
--- a/tests/roots/test-ext-autodoc/target/need_mocks.py
+++ b/tests/roots/test-ext-autodoc/target/need_mocks.py
@@ -22,6 +22,10 @@ def func(arg: missing_module.Class):
 
 class TestAutodoc(object):
     """TestAutodoc docstring."""
+
+    #: docstring
+    Alias = missing_module2.Class
+
     @missing_name
     def decoratedMethod(self):
         """TestAutodoc::decoratedMethod docstring"""
@@ -34,3 +38,6 @@ class Inherited(missing_module.Class):
 
 
 sphinx.missing_module4.missing_function(len(missing_name2))
+
+#: docstring
+Alias = missing_module2.Class
diff --git a/tests/test_ext_autodoc_configs.py b/tests/test_ext_autodoc_configs.py
index e04cd83b681..643899286a4 100644
--- a/tests/test_ext_autodoc_configs.py
+++ b/tests/test_ext_autodoc_configs.py
@@ -536,7 +536,7 @@ def test_mocked_module_imports(app, warning):
     sys.modules.pop('target', None)  # unload target module to clear the module cache
 
     # no autodoc_mock_imports
-    options = {"members": 'TestAutodoc,decoratedFunction,func'}
+    options = {"members": 'TestAutodoc,decoratedFunction,func,Alias'}
     actual = do_autodoc(app, 'module', 'target.need_mocks', options)
     assert list(actual) == []
     assert "autodoc: failed to import module 'need_mocks'" in warning.getvalue()
@@ -557,12 +557,24 @@ def test_mocked_module_imports(app, warning):
         '.. py:module:: target.need_mocks',
         '',
         '',
+        '.. py:data:: Alias',
+        '   :module: target.need_mocks',
+        '',
+        '   docstring',
+        '',
+        '',
         '.. py:class:: TestAutodoc()',
         '   :module: target.need_mocks',
         '',
         '   TestAutodoc docstring.',
         '',
         '',
+        '   .. py:attribute:: TestAutodoc.Alias',
+        '      :module: target.need_mocks',
+        '',
+        '      docstring',
+        '',
+        '',
         '   .. py:method:: TestAutodoc.decoratedMethod()',
         '      :module: target.need_mocks',
         '',
diff --git a/tests/test_ext_autodoc_mock.py b/tests/test_ext_autodoc_mock.py
index 497bd8a6b1a..f3a9e2dc187 100644
--- a/tests/test_ext_autodoc_mock.py
+++ b/tests/test_ext_autodoc_mock.py
@@ -146,6 +146,7 @@ class Inherited(mod1.Class):
 
         assert ismock(mod1) is True
         assert ismock(mod1.Class) is True
+        assert ismock(mod1.submod.Class) is True
         assert ismock(Inherited) is False
 
         assert ismock(mod2) is False