diff --git a/BaseTools/Source/C/Include/Common/BaseTypes.h b/BaseTools/Source/C/Include/Common/BaseTypes.h
index 08b60bae11..39c5408dd4 100644
--- a/BaseTools/Source/C/Include/Common/BaseTypes.h
+++ b/BaseTools/Source/C/Include/Common/BaseTypes.h
@@ -122,6 +122,31 @@
 
 #endif
 
+///
+/// 128 bit buffer containing a unique identifier value.
+/// Unless otherwise specified, aligned on a 64 bit boundary.
+///
+typedef struct {
+  UINT32  Data1;
+  UINT16  Data2;
+  UINT16  Data3;
+  UINT8   Data4[8];
+} GUID;
+
+///
+/// 4-byte buffer. An IPv4 internet protocol address.
+///
+typedef struct {
+  UINT8 Addr[4];
+} IPv4_ADDRESS;
+
+///
+/// 16-byte buffer. An IPv6 internet protocol address.
+///
+typedef struct {
+  UINT8 Addr[16];
+} IPv6_ADDRESS;
+
 //
 // Macro that returns the byte offset of a field in a data structure. 
 //