diff --git a/Doc/whatsnew/3.11.rst b/Doc/whatsnew/3.11.rst
index 41e4659b0f779f..ffb48f148ab0ee 100644
--- a/Doc/whatsnew/3.11.rst
+++ b/Doc/whatsnew/3.11.rst
@@ -787,6 +787,9 @@ Build Changes
 * The :mod:`tkinter` package now requires Tcl/Tk version 8.5.12 or newer.
   (Contributed by Serhiy Storchaka in :issue:`46996`.)
 
+* Python.h is now compatible with C++20 compilers. (Contributed by by Hasan
+  Aliyev in :issue:`39355`.)
+
 
 C API Changes
 =============
diff --git a/Include/cpython/import.h b/Include/cpython/import.h
index ef6be689468ee5..38f7a5a7961498 100644
--- a/Include/cpython/import.h
+++ b/Include/cpython/import.h
@@ -7,8 +7,8 @@ PyMODINIT_FUNC PyInit__imp(void);
 PyAPI_FUNC(int) _PyImport_IsInitialized(PyInterpreterState *);
 
 PyAPI_FUNC(PyObject *) _PyImport_GetModuleId(_Py_Identifier *name);
-PyAPI_FUNC(int) _PyImport_SetModule(PyObject *name, PyObject *module);
-PyAPI_FUNC(int) _PyImport_SetModuleString(const char *name, PyObject* module);
+PyAPI_FUNC(int) _PyImport_SetModule(PyObject *name, PyObject *mod);
+PyAPI_FUNC(int) _PyImport_SetModuleString(const char *name, PyObject *mod);
 
 PyAPI_FUNC(void) _PyImport_AcquireLock(void);
 PyAPI_FUNC(int) _PyImport_ReleaseLock(void);
diff --git a/Include/cpython/warnings.h b/Include/cpython/warnings.h
index 2ef8e3ce9435f4..2daa4f97afcffa 100644
--- a/Include/cpython/warnings.h
+++ b/Include/cpython/warnings.h
@@ -7,13 +7,13 @@ PyAPI_FUNC(int) PyErr_WarnExplicitObject(
     PyObject *message,
     PyObject *filename,
     int lineno,
-    PyObject *module,
+    PyObject *mod,
     PyObject *registry);
 
 PyAPI_FUNC(int) PyErr_WarnExplicitFormat(
     PyObject *category,
     const char *filename, int lineno,
-    const char *module, PyObject *registry,
+    const char *mod, PyObject *registry,
     const char *format, ...);
 
 // DEPRECATED: Use PyErr_WarnEx() instead.
diff --git a/Include/modsupport.h b/Include/modsupport.h
index 3cfefb413ca55a..f9e6bbbbf7ae2d 100644
--- a/Include/modsupport.h
+++ b/Include/modsupport.h
@@ -156,7 +156,7 @@ PyAPI_FUNC(int) PyModule_AddIntConstant(PyObject *, const char *, long);
 PyAPI_FUNC(int) PyModule_AddStringConstant(PyObject *, const char *, const char *);
 #if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03090000
 /* New in 3.9 */
-PyAPI_FUNC(int) PyModule_AddType(PyObject *module, PyTypeObject *type);
+PyAPI_FUNC(int) PyModule_AddType(PyObject *mod, PyTypeObject *type);
 #endif /* Py_LIMITED_API */
 #define PyModule_AddIntMacro(m, c) PyModule_AddIntConstant(m, #c, c)
 #define PyModule_AddStringMacro(m, c) PyModule_AddStringConstant(m, #c, c)
@@ -165,7 +165,7 @@ PyAPI_FUNC(int) PyModule_AddType(PyObject *module, PyTypeObject *type);
 /* New in 3.5 */
 PyAPI_FUNC(int) PyModule_SetDocString(PyObject *, const char *);
 PyAPI_FUNC(int) PyModule_AddFunctions(PyObject *, PyMethodDef *);
-PyAPI_FUNC(int) PyModule_ExecDef(PyObject *module, PyModuleDef *def);
+PyAPI_FUNC(int) PyModule_ExecDef(PyObject *mod, PyModuleDef *def);
 #endif
 
 #define Py_CLEANUP_SUPPORTED 0x20000
diff --git a/Include/warnings.h b/Include/warnings.h
index 18ac1543a3ca9e..c18098ea6f9a81 100644
--- a/Include/warnings.h
+++ b/Include/warnings.h
@@ -29,7 +29,7 @@ PyAPI_FUNC(int) PyErr_WarnExplicit(
     const char *message,        /* UTF-8 encoded string */
     const char *filename,       /* decoded from the filesystem encoding */
     int lineno,
-    const char *module,         /* UTF-8 encoded string */
+    const char *mod,         /* UTF-8 encoded string */
     PyObject *registry);
 
 #ifndef Py_LIMITED_API
diff --git a/Misc/NEWS.d/next/Core and Builtins/2022-02-11-18-51-11.bpo-39355.rcUPdT.rst b/Misc/NEWS.d/next/Core and Builtins/2022-02-11-18-51-11.bpo-39355.rcUPdT.rst
new file mode 100644
index 00000000000000..50bef8217622a9
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2022-02-11-18-51-11.bpo-39355.rcUPdT.rst	
@@ -0,0 +1 @@
+Make Python.h compatible with C++20 compilers.