diff --git a/SecurityPkg/Include/Guid/CcEventHob.h b/SecurityPkg/Include/Guid/CcEventHob.h
new file mode 100644
index 0000000000..072999ce92
--- /dev/null
+++ b/SecurityPkg/Include/Guid/CcEventHob.h
@@ -0,0 +1,22 @@
+/** @file
+  Defines the HOB GUID used to pass a CC_EVENT from SEC to
+  a CC DXE Driver. A GUIDed HOB is generated for each measurement
+  made in the SEC Phase.
+
+Copyright (c) 2021 - 2022, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef CC_EVENT_HOB_H_
+#define CC_EVENT_HOB_H_
+
+//
+// The Global ID of a GUIDed HOB used to pass a CC_EVENT from SEC to a CC DXE Driver.
+//
+#define EFI_CC_EVENT_HOB_GUID \
+  { 0x20f8fd36, 0x6d00, 0x40fb, { 0xb7, 0x04, 0xd1, 0x2c, 0x15, 0x3c, 0x62, 0xeb } }
+
+extern EFI_GUID  gCcEventEntryHobGuid;
+
+#endif
diff --git a/SecurityPkg/SecurityPkg.dec b/SecurityPkg/SecurityPkg.dec
index 9f7a032d60..0ee75efc1a 100644
--- a/SecurityPkg/SecurityPkg.dec
+++ b/SecurityPkg/SecurityPkg.dec
@@ -136,6 +136,10 @@
   ## Include/Guid/TcgEventHob.h
   gTcgEvent2EntryHobGuid             = { 0xd26c221e, 0x2430, 0x4c8a, { 0x91, 0x70, 0x3f, 0xcb, 0x45, 0x0, 0x41, 0x3f }}
 
+  ## Hob GUID used to pass a CC_EVENT from SEC to a CC DXE Driver.
+  ## Include/Guid/CcEventHob.h
+  gCcEventEntryHobGuid               = { 0x20f8fd36, 0x6d00, 0x40fb, { 0xb7, 0x04, 0xd1, 0x2c, 0x15, 0x3c, 0x62, 0xeb }}
+
   ## HOB GUID used to record TPM device error.
   #  Include/Guid/TcgEventHob.h
   gTpmErrorHobGuid                   = { 0xef598499, 0xb25e, 0x473a, { 0xbf, 0xaf, 0xe7, 0xe5, 0x7d, 0xce, 0x82, 0xc4 }}