diff --git a/src/app/clusters/application-launcher-server/application-launcher-server.h b/src/app/clusters/application-launcher-server/application-launcher-server.h
index 5c71e3d93fc82a..f7e538e9f52030 100644
--- a/src/app/clusters/application-launcher-server/application-launcher-server.h
+++ b/src/app/clusters/application-launcher-server/application-launcher-server.h
@@ -20,6 +20,9 @@
  *server implementation of the Application Launcher cluster.
  *******************************************************************************
  ******************************************************************************/
+
+#pragma once
+
 struct ApplicationLauncherResponse
 {
     uint8_t status;
diff --git a/src/app/clusters/media-playback-server/media-playback-server.h b/src/app/clusters/media-playback-server/media-playback-server.h
index 2850f97851b1a7..94edf7ed6fd6cc 100644
--- a/src/app/clusters/media-playback-server/media-playback-server.h
+++ b/src/app/clusters/media-playback-server/media-playback-server.h
@@ -22,6 +22,8 @@
  *******************************************************************************
  ******************************************************************************/
 
+#pragma once
+
 #include <stdint.h>
 
 enum MediaPlaybackRequest : uint8_t
diff --git a/src/app/clusters/power-source-server/power-source-server.h b/src/app/clusters/power-source-server/power-source-server.h
index 583960d1d0520a..b1c3ff853259a8 100644
--- a/src/app/clusters/power-source-server/power-source-server.h
+++ b/src/app/clusters/power-source-server/power-source-server.h
@@ -14,3 +14,5 @@
  *    See the License for the specific language governing permissions and
  *    limitations under the License.
  */
+
+#pragma once
diff --git a/src/app/clusters/target-navigator-server/target-navigator-server.h b/src/app/clusters/target-navigator-server/target-navigator-server.h
index 9cfb1f06dd6fc7..17d77613e0302a 100644
--- a/src/app/clusters/target-navigator-server/target-navigator-server.h
+++ b/src/app/clusters/target-navigator-server/target-navigator-server.h
@@ -21,6 +21,8 @@
  *******************************************************************************
  ******************************************************************************/
 
+#pragma once
+
 struct TargetNavigatorResponse
 {
     uint8_t status;
diff --git a/src/app/clusters/zll-level-control-server/zll-level-control-server.h b/src/app/clusters/zll-level-control-server/zll-level-control-server.h
index 11510d085e02ee..e1fd7510970c5a 100644
--- a/src/app/clusters/zll-level-control-server/zll-level-control-server.h
+++ b/src/app/clusters/zll-level-control-server/zll-level-control-server.h
@@ -32,6 +32,8 @@
  *    limitations under the License.
  */
 
+#pragma once
+
 /**
  * @file
  * @brief Definitions for the ZLL Level Control Server plugin.
diff --git a/src/app/clusters/zll-on-off-server/zll-on-off-server.h b/src/app/clusters/zll-on-off-server/zll-on-off-server.h
index aa08e6809d7548..1c994fc38a8c34 100644
--- a/src/app/clusters/zll-on-off-server/zll-on-off-server.h
+++ b/src/app/clusters/zll-on-off-server/zll-on-off-server.h
@@ -32,6 +32,8 @@
  *    limitations under the License.
  */
 
+#pragma once
+
 /**
  * @file
  * @brief Definitions for the ZLL On Off Server plugin.
diff --git a/src/app/clusters/zll-scenes-server/zll-scenes-server.h b/src/app/clusters/zll-scenes-server/zll-scenes-server.h
index f2e37d46b25d23..e2c41e5c443bd2 100644
--- a/src/app/clusters/zll-scenes-server/zll-scenes-server.h
+++ b/src/app/clusters/zll-scenes-server/zll-scenes-server.h
@@ -32,6 +32,8 @@
  *    limitations under the License.
  */
 
+#pragma once
+
 /**
  * @file
  * @brief Definitions for the ZLL Scenes Server plugin.
diff --git a/src/controller/java/StackLock.h b/src/controller/java/StackLock.h
index 0d8a1eff2c3360..42813ea1947df1 100644
--- a/src/controller/java/StackLock.h
+++ b/src/controller/java/StackLock.h
@@ -15,6 +15,8 @@
  *    limitations under the License.
  */
 
+#pragma once
+
 #include <pthread.h>
 
 /** A scoped lock/unlock around a mutex. */
diff --git a/src/include/platform/GeneralUtils.h b/src/include/platform/GeneralUtils.h
index e7bfc176e908a5..a9b8ba8bdef539 100644
--- a/src/include/platform/GeneralUtils.h
+++ b/src/include/platform/GeneralUtils.h
@@ -21,6 +21,8 @@
  *          General utility functions available on all platforms.
  */
 
+#pragma once
+
 #include <inet/Inet.h>
 
 namespace chip {
diff --git a/src/lib/mdns/Advertiser_ImplMinimalMdnsAllocator.h b/src/lib/mdns/Advertiser_ImplMinimalMdnsAllocator.h
index dccb515e3df804..e36e7c960f5636 100644
--- a/src/lib/mdns/Advertiser_ImplMinimalMdnsAllocator.h
+++ b/src/lib/mdns/Advertiser_ImplMinimalMdnsAllocator.h
@@ -14,6 +14,9 @@
  *    See the License for the specific language governing permissions and
  *    limitations under the License.
  */
+
+#pragma once
+
 #include <inttypes.h>
 
 #include <lib/core/CHIPError.h>
diff --git a/src/lib/mdns/AllInterfacesListenIterator.h b/src/lib/mdns/AllInterfacesListenIterator.h
index 4439a9fa450e20..de4c5a8cdb75dc 100644
--- a/src/lib/mdns/AllInterfacesListenIterator.h
+++ b/src/lib/mdns/AllInterfacesListenIterator.h
@@ -15,6 +15,8 @@
  *    limitations under the License.
  */
 
+#pragma once
+
 #include <stdio.h>
 
 #include <lib/mdns/minimal/Server.h>
diff --git a/src/lib/support/Defer.h b/src/lib/support/Defer.h
index 6b32a8417ebb97..a576a60f139534 100644
--- a/src/lib/support/Defer.h
+++ b/src/lib/support/Defer.h
@@ -16,6 +16,8 @@
  *    limitations under the License.
  */
 
+#pragma once
+
 #include <utility>
 
 template <typename Function>
diff --git a/src/platform/Darwin/CHIPP256KeypairNativeBridge.h b/src/platform/Darwin/CHIPP256KeypairNativeBridge.h
index d3e39df61aaead..3b51cafd29d620 100644
--- a/src/platform/Darwin/CHIPP256KeypairNativeBridge.h
+++ b/src/platform/Darwin/CHIPP256KeypairNativeBridge.h
@@ -16,6 +16,8 @@
  *    limitations under the License.
  */
 
+#pragma once
+
 #include <crypto/CHIPCryptoPAL.h>
 
 namespace chip {
diff --git a/src/platform/Darwin/MdnsError.h b/src/platform/Darwin/MdnsError.h
index 3a2fc96a10c96a..83329987d8ef20 100644
--- a/src/platform/Darwin/MdnsError.h
+++ b/src/platform/Darwin/MdnsError.h
@@ -15,6 +15,8 @@
  *    limitations under the License.
  */
 
+#pragma once
+
 #include "MdnsImpl.h"
 
 namespace chip {
diff --git a/src/platform/fake/MdnsImpl.h b/src/platform/fake/MdnsImpl.h
index e2d176ad67a3fb..79212bb7959878 100644
--- a/src/platform/fake/MdnsImpl.h
+++ b/src/platform/fake/MdnsImpl.h
@@ -14,6 +14,9 @@
  *    See the License for the specific language governing permissions and
  *    limitations under the License.
  */
+
+#pragma once
+
 #include "lib/mdns/platform/Mdns.h"
 #include <lib/support/CHIPMemString.h>
 
diff --git a/src/setup_payload/ManualSetupPayloadParser.h b/src/setup_payload/ManualSetupPayloadParser.h
index 3a4dff4a6e81a9..f8457a3c4aa124 100644
--- a/src/setup_payload/ManualSetupPayloadParser.h
+++ b/src/setup_payload/ManualSetupPayloadParser.h
@@ -21,6 +21,8 @@
  *      CHIP specification.
  */
 
+#pragma once
+
 #include "SetupPayload.h"
 
 #include <lib/core/CHIPError.h>
diff --git a/src/setup_payload/QRCodeSetupPayloadParser.h b/src/setup_payload/QRCodeSetupPayloadParser.h
index 8b75ee1fb32a3b..c7e431c4158791 100644
--- a/src/setup_payload/QRCodeSetupPayloadParser.h
+++ b/src/setup_payload/QRCodeSetupPayloadParser.h
@@ -21,6 +21,8 @@
  *      CHIP specification.
  */
 
+#pragma once
+
 #include "SetupPayload.h"
 
 #include <lib/core/CHIPError.h>
diff --git a/src/setup_payload/tests/TestHelpers.h b/src/setup_payload/tests/TestHelpers.h
index 5bd2c976dc566c..6a155dec8950de 100644
--- a/src/setup_payload/tests/TestHelpers.h
+++ b/src/setup_payload/tests/TestHelpers.h
@@ -15,6 +15,8 @@
  *    limitations under the License.
  */
 
+#pragma once
+
 #include <bitset>
 
 #include <setup_payload/Base38Decode.cpp>