diff --git a/SecurityPkg/Library/DxeTcgPhysicalPresenceLib/DxeTcgPhysicalPresenceLib.c b/SecurityPkg/Library/DxeTcgPhysicalPresenceLib/DxeTcgPhysicalPresenceLib.c
index 7cd3ddfc1b..ba1abe9e08 100644
--- a/SecurityPkg/Library/DxeTcgPhysicalPresenceLib/DxeTcgPhysicalPresenceLib.c
+++ b/SecurityPkg/Library/DxeTcgPhysicalPresenceLib/DxeTcgPhysicalPresenceLib.c
@@ -185,7 +185,7 @@ TpmPhysicalPresence (
   @param[in] TcgProtocol              EFI TCG Protocol instance.
   @param[in] Ordinal                  TPM command code.
   @param[in] AdditionalParameterSize  Additional parameter size.
-  @param[in] AdditionalParameters     Pointer to the Additional paramaters.
+  @param[in] AdditionalParameters     Pointer to the Additional parameters.
 
   @retval TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE  Error occurred during sending command to TPM or
                                                   receiving response from TPM.
diff --git a/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLib.c b/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLib.c
index cabc0c6c75..f0e95e5ec0 100644
--- a/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLib.c
+++ b/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLib.c
@@ -478,7 +478,7 @@ DxeTpm2MeasureBootHandler (
   Status = gBS->LocateDevicePath (&gEfiBlockIoProtocolGuid, &DevicePathNode, &Handle);
   if (!EFI_ERROR (Status) && !mTcg2MeasureGptTableFlag) {
     //
-    // Find the gpt partion on the given devicepath
+    // Find the gpt partition on the given devicepath
     //
     DevicePathNode = OrigDevicePathNode;
     ASSERT (DevicePathNode != NULL);
diff --git a/SecurityPkg/Library/DxeTpmMeasureBootLib/DxeTpmMeasureBootLib.c b/SecurityPkg/Library/DxeTpmMeasureBootLib/DxeTpmMeasureBootLib.c
index dfaaa0f0b3..d499371e7a 100644
--- a/SecurityPkg/Library/DxeTpmMeasureBootLib/DxeTpmMeasureBootLib.c
+++ b/SecurityPkg/Library/DxeTpmMeasureBootLib/DxeTpmMeasureBootLib.c
@@ -776,7 +776,7 @@ DxeTpmMeasureBootHandler (
   Status = gBS->LocateDevicePath (&gEfiBlockIoProtocolGuid, &DevicePathNode, &Handle);
   if (!EFI_ERROR (Status) && !mMeasureGptTableFlag) {
     //
-    // Find the gpt partion on the given devicepath
+    // Find the gpt partition on the given devicepath
     //
     DevicePathNode = OrigDevicePathNode;
     ASSERT (DevicePathNode != NULL);
diff --git a/SecurityPkg/Library/HashLibBaseCryptoRouter/HashLibBaseCryptoRouterDxe.c b/SecurityPkg/Library/HashLibBaseCryptoRouter/HashLibBaseCryptoRouterDxe.c
index a7cb05849c..7a0f61efbb 100644
--- a/SecurityPkg/Library/HashLibBaseCryptoRouter/HashLibBaseCryptoRouterDxe.c
+++ b/SecurityPkg/Library/HashLibBaseCryptoRouter/HashLibBaseCryptoRouterDxe.c
@@ -1,6 +1,6 @@
 /** @file
   This library is BaseCrypto router. It will redirect hash request to each individual
-  hash handler registerd, such as SHA1, SHA256.
+  hash handler registered, such as SHA1, SHA256.
   Platform can use PcdTpm2HashMask to mask some hash engines.
 
 Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved. <BR>
diff --git a/SecurityPkg/Library/HashLibBaseCryptoRouter/HashLibBaseCryptoRouterPei.c b/SecurityPkg/Library/HashLibBaseCryptoRouter/HashLibBaseCryptoRouterPei.c
index d31c8b0782..42cb562f67 100644
--- a/SecurityPkg/Library/HashLibBaseCryptoRouter/HashLibBaseCryptoRouterPei.c
+++ b/SecurityPkg/Library/HashLibBaseCryptoRouter/HashLibBaseCryptoRouterPei.c
@@ -1,6 +1,6 @@
 /** @file
   This library is BaseCrypto router. It will redirect hash request to each individual
-  hash handler registerd, such as SHA1, SHA256.
+  hash handler registered, such as SHA1, SHA256.
   Platform can use PcdTpm2HashMask to mask some hash engines.
 
 Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved. <BR>
diff --git a/SecurityPkg/Library/PlatformSecureLibNull/PlatformSecureLibNull.inf b/SecurityPkg/Library/PlatformSecureLibNull/PlatformSecureLibNull.inf
index 9ae597d381..85607aa645 100644
--- a/SecurityPkg/Library/PlatformSecureLibNull/PlatformSecureLibNull.inf
+++ b/SecurityPkg/Library/PlatformSecureLibNull/PlatformSecureLibNull.inf
@@ -1,5 +1,5 @@
 ## @file
-#  NULL platform secure library instance that alway returns TRUE for a user physical present
+#  NULL platform secure library instance that always returns TRUE for a user physical present
 #
 #  NULL PlatformSecureLib instance does NOT really detect whether a physical present
 #  user exists but returns TRUE directly. This instance can be used to verify security
diff --git a/SecurityPkg/Library/PlatformSecureLibNull/PlatformSecureLibNull.uni b/SecurityPkg/Library/PlatformSecureLibNull/PlatformSecureLibNull.uni
index e5c9d1020f..860b8cbb5a 100644
--- a/SecurityPkg/Library/PlatformSecureLibNull/PlatformSecureLibNull.uni
+++ b/SecurityPkg/Library/PlatformSecureLibNull/PlatformSecureLibNull.uni
@@ -1,5 +1,5 @@
 // /** @file
-// NULL platform secure library instance that alway returns TRUE for a user physical present
+// NULL platform secure library instance that always returns TRUE for a user physical present
 //
 // NULL PlatformSecureLib instance does NOT really detect whether a physical present
 // user exists but returns TRUE directly. This instance can be used to verify security
diff --git a/SecurityPkg/Pkcs7Verify/Pkcs7VerifyDxe/Pkcs7VerifyDxe.c b/SecurityPkg/Pkcs7Verify/Pkcs7VerifyDxe/Pkcs7VerifyDxe.c
index a96862f937..42282e33a9 100644
--- a/SecurityPkg/Pkcs7Verify/Pkcs7VerifyDxe/Pkcs7VerifyDxe.c
+++ b/SecurityPkg/Pkcs7Verify/Pkcs7VerifyDxe/Pkcs7VerifyDxe.c
@@ -519,7 +519,7 @@ IsValidTimestamp (
   @param[in]  SignedData      Pointer to buffer containing ASN.1 DER-encoded PKCS7
                               signature.
   @param[in]  SignedDataSize  The size of SignedData buffer in bytes.
-  @param[in]  InHash          Pointer to the buffer containing the hash of the mesage data
+  @param[in]  InHash          Pointer to the buffer containing the hash of the message data
                               previously signed and to be verified.
   @param[in]  InHashSize      The size of InHash buffer in bytes.
   @param[in]  RevokedDb       Pointer to a list of pointers to EFI_SIGNATURE_LIST
diff --git a/SecurityPkg/RandomNumberGenerator/RngDxe/RngDxe.c b/SecurityPkg/RandomNumberGenerator/RngDxe/RngDxe.c
index 90e54a89ce..13d3dbd0bf 100644
--- a/SecurityPkg/RandomNumberGenerator/RngDxe/RngDxe.c
+++ b/SecurityPkg/RandomNumberGenerator/RngDxe/RngDxe.c
@@ -4,7 +4,7 @@
   The driver will use the new RDRAND instruction to produce high-quality, high-performance
   entropy and random number.
 
-  RNG Algoritnms defined in UEFI 2.4:
+  RNG Algorithms defined in UEFI 2.4:
    - EFI_RNG_ALGORITHM_SP800_90_CTR_256_GUID  - Supported
      (RDRAND implements a hardware NIST SP800-90 AES-CTR-256 based DRBG)
    - EFI_RNG_ALGORITHM_RAW                    - Supported