diff --git a/Include/cpython/interpreteridobject.h b/Include/cpython/interpreteridobject.h
deleted file mode 100644
index 5076584209b90b..00000000000000
--- a/Include/cpython/interpreteridobject.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#ifndef Py_CPYTHON_INTERPRETERIDOBJECT_H
-#  error "this header file must not be included directly"
-#endif
-
-/* Interpreter ID Object */
-
-PyAPI_DATA(PyTypeObject) _PyInterpreterID_Type;
-
-PyAPI_FUNC(PyObject *) _PyInterpreterID_New(int64_t);
-PyAPI_FUNC(PyObject *) _PyInterpreterState_GetIDObject(PyInterpreterState *);
-PyAPI_FUNC(PyInterpreterState *) _PyInterpreterID_LookUp(PyObject *);
diff --git a/Include/internal/pycore_interp_id.h b/Include/internal/pycore_interp_id.h
new file mode 100644
index 00000000000000..34c96df98ef730
--- /dev/null
+++ b/Include/internal/pycore_interp_id.h
@@ -0,0 +1,28 @@
+/* Interpreter ID Object */
+
+#ifndef Py_INTERNAL_INTERPRETERIDOBJECT_H
+#define Py_INTERNAL_INTERPRETERIDOBJECT_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+// Export for the _xxsubinterpreters shared extension
+PyAPI_DATA(PyTypeObject) _PyInterpreterID_Type;
+
+// Export for the _xxsubinterpreters shared extension
+PyAPI_FUNC(PyObject*) _PyInterpreterID_New(int64_t);
+
+// Export for the _xxinterpchannels shared extension
+PyAPI_FUNC(PyObject*) _PyInterpreterState_GetIDObject(PyInterpreterState *);
+
+// Export for the _testinternalcapi shared extension
+PyAPI_FUNC(PyInterpreterState*) _PyInterpreterID_LookUp(PyObject *);
+
+#ifdef __cplusplus
+}
+#endif
+#endif  // !Py_INTERNAL_INTERPRETERIDOBJECT_H
diff --git a/Include/interpreteridobject.h b/Include/interpreteridobject.h
deleted file mode 100644
index 8432632f339e92..00000000000000
--- a/Include/interpreteridobject.h
+++ /dev/null
@@ -1,17 +0,0 @@
-#ifndef Py_INTERPRETERIDOBJECT_H
-#define Py_INTERPRETERIDOBJECT_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifndef Py_LIMITED_API
-#  define Py_CPYTHON_INTERPRETERIDOBJECT_H
-#  include "cpython/interpreteridobject.h"
-#  undef Py_CPYTHON_INTERPRETERIDOBJECT_H
-#endif
-
-#ifdef __cplusplus
-}
-#endif
-#endif /* !Py_INTERPRETERIDOBJECT_H */
diff --git a/Makefile.pre.in b/Makefile.pre.in
index 3725feaca66ce3..5f1988b0d17213 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -1631,7 +1631,6 @@ PYTHON_HEADERS= \
 		$(srcdir)/Include/floatobject.h \
 		$(srcdir)/Include/frameobject.h \
 		$(srcdir)/Include/import.h \
-		$(srcdir)/Include/interpreteridobject.h \
 		$(srcdir)/Include/intrcheck.h \
 		$(srcdir)/Include/iterobject.h \
 		$(srcdir)/Include/listobject.h \
@@ -1701,7 +1700,6 @@ PYTHON_HEADERS= \
 		$(srcdir)/Include/cpython/genobject.h \
 		$(srcdir)/Include/cpython/import.h \
 		$(srcdir)/Include/cpython/initconfig.h \
-		$(srcdir)/Include/cpython/interpreteridobject.h \
 		$(srcdir)/Include/cpython/listobject.h \
 		$(srcdir)/Include/cpython/longintrepr.h \
 		$(srcdir)/Include/cpython/longobject.h \
@@ -1773,6 +1771,7 @@ PYTHON_HEADERS= \
 		$(srcdir)/Include/internal/pycore_import.h \
 		$(srcdir)/Include/internal/pycore_initconfig.h \
 		$(srcdir)/Include/internal/pycore_interp.h \
+		$(srcdir)/Include/internal/pycore_interp_id.h \
 		$(srcdir)/Include/internal/pycore_intrinsics.h \
 		$(srcdir)/Include/internal/pycore_list.h \
 		$(srcdir)/Include/internal/pycore_long.h \
diff --git a/Modules/_testinternalcapi.c b/Modules/_testinternalcapi.c
index 74c932fa921cd0..ecc2721a4988f9 100644
--- a/Modules/_testinternalcapi.c
+++ b/Modules/_testinternalcapi.c
@@ -11,18 +11,18 @@
 
 #include "Python.h"
 #include "frameobject.h"
-#include "interpreteridobject.h"  // _PyInterpreterID_LookUp()
 #include "pycore_atomic_funcs.h" // _Py_atomic_int_get()
 #include "pycore_bitutils.h"     // _Py_bswap32()
 #include "pycore_bytesobject.h"  // _PyBytes_Find()
-#include "pycore_compile.h"      // _PyCompile_CodeGen, _PyCompile_OptimizeCfg, _PyCompile_Assemble, _PyCompile_CleanDoc
 #include "pycore_ceval.h"        // _PyEval_AddPendingCall
+#include "pycore_compile.h"      // _PyCompile_CodeGen, _PyCompile_OptimizeCfg, _PyCompile_Assemble, _PyCompile_CleanDoc
 #include "pycore_fileutils.h"    // _Py_normpath
 #include "pycore_frame.h"        // _PyInterpreterFrame
 #include "pycore_gc.h"           // PyGC_Head
 #include "pycore_hashtable.h"    // _Py_hashtable_new()
 #include "pycore_initconfig.h"   // _Py_GetConfigsAsDict()
 #include "pycore_interp.h"       // _PyInterpreterState_GetConfigCopy()
+#include "pycore_interp_id.h"    // _PyInterpreterID_LookUp()
 #include "pycore_pathconfig.h"   // _PyPathConfig_ClearGlobal()
 #include "pycore_pyerrors.h"     // _Py_UTF8_Edit_Cost()
 #include "pycore_pystate.h"      // _PyThreadState_GET()
diff --git a/Modules/_xxinterpchannelsmodule.c b/Modules/_xxinterpchannelsmodule.c
index 82472555ec7d62..bdffdba52aa02e 100644
--- a/Modules/_xxinterpchannelsmodule.c
+++ b/Modules/_xxinterpchannelsmodule.c
@@ -6,8 +6,8 @@
 #endif
 
 #include "Python.h"
-#include "interpreteridobject.h"
 #include "pycore_atexit.h"        // _Py_AtExit()
+#include "pycore_interp_id.h"     // _PyInterpreterState_GetIDObject()
 
 
 /*
diff --git a/Modules/_xxsubinterpretersmodule.c b/Modules/_xxsubinterpretersmodule.c
index d2e0593872c5f0..bf01aaf6ed0409 100644
--- a/Modules/_xxsubinterpretersmodule.c
+++ b/Modules/_xxsubinterpretersmodule.c
@@ -7,7 +7,7 @@
 
 #include "Python.h"
 #include "pycore_interp.h"        // _PyInterpreterState_GetMainModule()
-#include "interpreteridobject.h"
+#include "pycore_interp_id.h"     // _PyInterpreterState_GetIDObject()
 
 
 #define MODULE_NAME "_xxsubinterpreters"
diff --git a/Objects/interpreteridobject.c b/Objects/interpreteridobject.c
index 46239100dcb7b7..7a3e245ce3357e 100644
--- a/Objects/interpreteridobject.c
+++ b/Objects/interpreteridobject.c
@@ -3,7 +3,7 @@
 #include "Python.h"
 #include "pycore_abstract.h"   // _PyIndex_Check()
 #include "pycore_interp.h"     // _PyInterpreterState_LookUpID()
-#include "interpreteridobject.h"
+#include "pycore_interp_id.h"  // _PyInterpreterID_Type
 
 
 typedef struct interpid {
diff --git a/Objects/object.c b/Objects/object.c
index bfbc87198f5b3c..0dcf06ba4e8218 100644
--- a/Objects/object.c
+++ b/Objects/object.c
@@ -8,16 +8,16 @@
 #include "pycore_dict.h"          // _PyObject_MakeDictFromInstanceAttributes()
 #include "pycore_floatobject.h"   // _PyFloat_DebugMallocStats()
 #include "pycore_initconfig.h"    // _PyStatus_EXCEPTION()
+#include "pycore_interp_id.h"     // _PyInterpreterID_Type
 #include "pycore_namespace.h"     // _PyNamespace_Type
 #include "pycore_object.h"        // _PyType_CheckConsistency(), _Py_FatalRefcountError()
 #include "pycore_pyerrors.h"      // _PyErr_Occurred()
 #include "pycore_pymem.h"         // _PyMem_IsPtrFreed()
 #include "pycore_pystate.h"       // _PyThreadState_GET()
 #include "pycore_symtable.h"      // PySTEntry_Type
-#include "pycore_typevarobject.h" // _PyTypeAlias_Type, _Py_initialize_generic
 #include "pycore_typeobject.h"    // _PyBufferWrapper_Type
+#include "pycore_typevarobject.h" // _PyTypeAlias_Type, _Py_initialize_generic
 #include "pycore_unionobject.h"   // _PyUnion_Type
-#include "interpreteridobject.h"  // _PyInterpreterID_Type
 
 #ifdef Py_LIMITED_API
    // Prevent recursive call _Py_IncRef() <=> Py_INCREF()
diff --git a/PCbuild/pythoncore.vcxproj b/PCbuild/pythoncore.vcxproj
index bfe59acf12a69d..5ccc8958330650 100644
--- a/PCbuild/pythoncore.vcxproj
+++ b/PCbuild/pythoncore.vcxproj
@@ -152,7 +152,6 @@
     <ClInclude Include="..\Include\cpython\genobject.h" />
     <ClInclude Include="..\Include\cpython\import.h" />
     <ClInclude Include="..\Include\cpython\initconfig.h" />
-    <ClInclude Include="..\Include\cpython\interpreteridobject.h" />
     <ClInclude Include="..\Include\cpython\listobject.h" />
     <ClInclude Include="..\Include\cpython\longintrepr.h" />
     <ClInclude Include="..\Include\cpython\longobject.h" />
@@ -238,6 +237,7 @@
     <ClInclude Include="..\Include\internal\pycore_import.h" />
     <ClInclude Include="..\Include\internal\pycore_initconfig.h" />
     <ClInclude Include="..\Include\internal\pycore_interp.h" />
+    <ClInclude Include="..\Include\internal\pycore_interp_id.h" />
     <ClInclude Include="..\Include\internal\pycore_intrinsics.h" />
     <ClInclude Include="..\Include\internal\pycore_list.h" />
     <ClInclude Include="..\Include\internal\pycore_long.h" />
@@ -281,7 +281,6 @@
     <ClInclude Include="..\Include\internal\pycore_unicodeobject_generated.h" />
     <ClInclude Include="..\Include\internal\pycore_warnings.h" />
     <ClInclude Include="..\Include\internal\pycore_weakref.h" />
-    <ClInclude Include="..\Include\interpreteridobject.h" />
     <ClInclude Include="..\Include\intrcheck.h" />
     <ClInclude Include="..\Include\iterobject.h" />
     <ClInclude Include="..\Include\listobject.h" />
diff --git a/PCbuild/pythoncore.vcxproj.filters b/PCbuild/pythoncore.vcxproj.filters
index 0a8b0c3faf51e1..54a77f81a9a1ab 100644
--- a/PCbuild/pythoncore.vcxproj.filters
+++ b/PCbuild/pythoncore.vcxproj.filters
@@ -312,9 +312,6 @@
     <ClInclude Include="..\Include\pyhash.h">
       <Filter>Include</Filter>
     </ClInclude>
-    <ClInclude Include="..\Include\interpreteridobject.h">
-      <Filter>Include</Filter>
-    </ClInclude>
     <ClInclude Include="..\Modules\hashtable.h">
       <Filter>Modules</Filter>
     </ClInclude>
@@ -462,9 +459,6 @@
     <ClInclude Include="..\Include\cpython\genobject.h">
       <Filter>Include</Filter>
     </ClInclude>
-    <ClInclude Include="..\Include\cpython\interpreteridobject.h">
-      <Filter>Include\cpython</Filter>
-    </ClInclude>
     <ClInclude Include="..\Include\cpython\pythonrun.h">
       <Filter>Include\cpython</Filter>
     </ClInclude>
@@ -618,6 +612,9 @@
     <ClInclude Include="..\Include\internal\pycore_interp.h">
       <Filter>Include\internal</Filter>
     </ClInclude>
+    <ClInclude Include="..\Include\internal\pycore_interp_id.h">
+      <Filter>Include\internal</Filter>
+    </ClInclude>
     <ClInclude Include="..\Include\internal\pycore_intrinsics.h">
       <Filter>Include\cpython</Filter>
     </ClInclude>
diff --git a/Tools/c-analyzer/cpython/_parser.py b/Tools/c-analyzer/cpython/_parser.py
index 9bc7285e18b2fb..64ce4cda7d6ed7 100644
--- a/Tools/c-analyzer/cpython/_parser.py
+++ b/Tools/c-analyzer/cpython/_parser.py
@@ -227,7 +227,6 @@ def clean_lines(text):
 Include/cpython/fileutils.h	Py_CPYTHON_FILEUTILS_H	1
 Include/cpython/frameobject.h	Py_CPYTHON_FRAMEOBJECT_H	1
 Include/cpython/import.h	Py_CPYTHON_IMPORT_H	1
-Include/cpython/interpreteridobject.h	Py_CPYTHON_INTERPRETERIDOBJECT_H	1
 Include/cpython/listobject.h	Py_CPYTHON_LISTOBJECT_H	1
 Include/cpython/methodobject.h	Py_CPYTHON_METHODOBJECT_H	1
 Include/cpython/object.h	Py_CPYTHON_OBJECT_H	1