diff -r bca81ea8f898 Doc/library/winreg.rst
--- a/Doc/library/winreg.rst	Mon May 23 08:41:48 2016 +0300
+++ b/Doc/library/winreg.rst	Mon May 23 12:49:17 2016 +0200
@@ -633,7 +633,7 @@
 
 .. data:: REG_DWORD_LITTLE_ENDIAN
 
-   A 32-bit number in little-endian format.
+   A 32-bit number in little-endian format. Equivalent to :const:`REG_DWORD`.
 
 .. data:: REG_DWORD_BIG_ENDIAN
 
@@ -657,6 +657,14 @@
 
    No defined value type.
 
+.. data:: REG_QWORD
+   
+   A 64-bit number.
+
+.. data:: REG_QWORD_LITTLE_ENDIAN
+
+   A 64-bit number in little-endian format. Equivalent to :const:`REG_QWORD`.
+
 .. data:: REG_RESOURCE_LIST
 
    A device-driver resource list.
diff -r bca81ea8f898 Lib/test/test_winreg.py
--- a/Lib/test/test_winreg.py	Mon May 23 08:41:48 2016 +0300
+++ b/Lib/test/test_winreg.py	Mon May 23 12:49:17 2016 +0200
@@ -37,6 +37,7 @@
 
 test_data = [
     ("Int Value",     45,                                      REG_DWORD),
+    ("Qword Value",   0x1122334455667788,                      REG_QWORD),
     ("String Val",    "A string value",                        REG_SZ),
     ("StringExpand",  "The path is %path%",                    REG_EXPAND_SZ),
     ("Multi-string",  ["Lots", "of", "string", "values"],      REG_MULTI_SZ),
diff -r bca81ea8f898 PC/winreg.c
--- a/PC/winreg.c	Mon May 23 08:41:48 2016 +0300
+++ b/PC/winreg.c	Mon May 23 12:49:17 2016 +0200
@@ -563,6 +563,24 @@
                 memcpy(*retDataBuf, &d, sizeof(DWORD));
             }
             break;
+        case REG_QWORD:
+          if (value != Py_None && !PyLong_Check(value))
+                return FALSE;
+            *retDataBuf = (BYTE *)PyMem_NEW(DWORD64, 1);
+            if (*retDataBuf==NULL){
+                PyErr_NoMemory();
+                return FALSE;
+            }
+            *retDataSize = sizeof(DWORD64);
+            if (value == Py_None) {
+				DWORD64 zero = 0;
+                memcpy(*retDataBuf, &zero, sizeof(DWORD64));
+            }
+            else {
+				DWORD64 d = PyLong_AsUnsignedLongLong(value);
+                memcpy(*retDataBuf, &d, sizeof(DWORD64));
+            }
+            break;
         case REG_SZ:
         case REG_EXPAND_SZ:
             {
@@ -690,7 +708,13 @@
             if (retDataSize == 0)
                 obData = PyLong_FromUnsignedLong(0);
             else
-                obData = PyLong_FromUnsignedLong(*(int *)retDataBuf);
+                obData = PyLong_FromUnsignedLong(*(DWORD *)retDataBuf);
+            break;
+        case REG_QWORD:
+            if (retDataSize == 0)
+                obData = PyLong_FromUnsignedLongLong(0);
+            else
+                obData = PyLong_FromUnsignedLongLong(*(DWORD64 *)retDataBuf);
             break;
         case REG_SZ:
         case REG_EXPAND_SZ:
@@ -1599,7 +1623,7 @@
         An integer that specifies the type of the data, one of:
         REG_BINARY -- Binary data in any form.
         REG_DWORD -- A 32-bit number.
-        REG_DWORD_LITTLE_ENDIAN -- A 32-bit number in little-endian format.
+        REG_DWORD_LITTLE_ENDIAN -- A 32-bit number in little-endian format. Equivalent to REG_DWORD
         REG_DWORD_BIG_ENDIAN -- A 32-bit number in big-endian format.
         REG_EXPAND_SZ -- A null-terminated string that contains unexpanded
                          references to environment variables (for example,
@@ -1609,6 +1633,8 @@
                         by two null characters.  Note that Python handles
                         this termination automatically.
         REG_NONE -- No defined value type.
+        REG_QWORD -- A 64-bit number.
+        REG_QWORD_LITTLE_ENDIAN -- A 64-bit number in little-endian format. Equivalent to REG_QWORD.
         REG_RESOURCE_LIST -- A device-driver resource list.
         REG_SZ -- A null-terminated string.
     value: object
@@ -1918,6 +1944,8 @@
     ADD_INT(REG_DWORD);
     ADD_INT(REG_DWORD_LITTLE_ENDIAN);
     ADD_INT(REG_DWORD_BIG_ENDIAN);
+    ADD_INT(REG_QWORD);
+    ADD_INT(REG_QWORD_LITTLE_ENDIAN);
     ADD_INT(REG_LINK);
     ADD_INT(REG_MULTI_SZ);
     ADD_INT(REG_RESOURCE_LIST);