diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec
index aa9e8066d8..f57e5c5917 100644
--- a/MdeModulePkg/MdeModulePkg.dec
+++ b/MdeModulePkg/MdeModulePkg.dec
@@ -1504,6 +1504,12 @@
   # @Prompt Mmio base address of pci-based SD/MMC host controller.
   gEfiMdeModulePkgTokenSpaceGuid.PcdSdMmcPciHostControllerMmioBase|0xd0000000|UINT32|0x30001043
 
+  ## Indicates if ACPI S3 will be enabled.<BR><BR>
+  #   TRUE  - ACPI S3 will be enabled.<BR>
+  #   FALSE - ACPI S3 will be disabled.<BR>
+  # @Prompt ACPI S3 Enable.
+  gEfiMdeModulePkgTokenSpaceGuid.PcdAcpiS3Enable|TRUE|BOOLEAN|0x01100000
+
 [PcdsPatchableInModule]
   ## Specify memory size with page number for PEI code when
   #  Loading Module at Fixed Address feature is enabled.
diff --git a/MdeModulePkg/MdeModulePkg.uni b/MdeModulePkg/MdeModulePkg.uni
index 75659c115f..cbd4ad31b2 100644
--- a/MdeModulePkg/MdeModulePkg.uni
+++ b/MdeModulePkg/MdeModulePkg.uni
@@ -325,6 +325,12 @@
                                                                                   "TRUE  - to set NX for stack.<BR>"
                                                                                   "FALSE - Not to set NX for stack.<BR>"
 
+#string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdAcpiS3Enable_PROMPT  #language en-US "ACPI S3 Enable"
+
+#string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdAcpiS3Enable_HELP  #language en-US "Indicates if ACPI S3 will be enabled.<BR><BR>"
+                                                                                  "TRUE  - ACPI S3 will be enabled.<BR>"
+                                                                                  "FALSE - ACPI S3 will be disabled.<BR>"
+
 #string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdVarCheckVfrDriverGuidArray_PROMPT  #language en-US "Driver guid array of VFR drivers for VarCheckHiiBin generation"
 
 #string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdVarCheckVfrDriverGuidArray_HELP  #language en-US "This PCD to include the driver guid of VFR drivers for VarCheckHiiBin generation.<BR><BR>"