diff --git a/src/transport/BLE.h b/src/transport/BLE.h
index cc16c126f6853f..7b156adcf5c240 100644
--- a/src/transport/BLE.h
+++ b/src/transport/BLE.h
@@ -22,8 +22,7 @@
  *
  */
 
-#ifndef __TRANSPORT_BLE_H__
-#define __TRANSPORT_BLE_H__
+#pragma once
 
 #include <ble/BleConfig.h>
 
@@ -111,5 +110,3 @@ class DLL_EXPORT BLE : public Base
 
 } // namespace Transport
 } // namespace chip
-
-#endif // __TRANSPORT_BLE_H__
diff --git a/src/transport/NetworkProvisioning.h b/src/transport/NetworkProvisioning.h
index b81fd20ce9dbf6..6adc2c9f743d75 100644
--- a/src/transport/NetworkProvisioning.h
+++ b/src/transport/NetworkProvisioning.h
@@ -21,8 +21,7 @@
  *
  */
 
-#ifndef __CHIP_NETWORK_PROVISIONING_H__
-#define __CHIP_NETWORK_PROVISIONING_H__
+#pragma once
 
 #include <core/CHIPCore.h>
 #include <core/ReferenceCounted.h>
@@ -137,4 +136,3 @@ class DLL_EXPORT NetworkProvisioning
 };
 
 } // namespace chip
-#endif // __CHIP_NETWORK_PROVISIONING_H__
diff --git a/src/transport/PeerConnectionState.h b/src/transport/PeerConnectionState.h
index 93264f1e98dabd..e44e6e33eb6d1f 100644
--- a/src/transport/PeerConnectionState.h
+++ b/src/transport/PeerConnectionState.h
@@ -19,8 +19,7 @@
  * @brief Defines state relevant for an active connection to a peer.
  */
 
-#ifndef PEER_CONNCTION_STATE_H_
-#define PEER_CONNCTION_STATE_H_
+#pragma once
 
 #include <transport/SecureSession.h>
 #include <transport/raw/MessageHeader.h>
@@ -106,5 +105,3 @@ class PeerConnectionState
 
 } // namespace Transport
 } // namespace chip
-
-#endif // PEER_CONNCTION_STATE_H_
diff --git a/src/transport/RendezvousParameters.h b/src/transport/RendezvousParameters.h
index 33053e6d3074f5..08bf56f0a9cd14 100644
--- a/src/transport/RendezvousParameters.h
+++ b/src/transport/RendezvousParameters.h
@@ -15,8 +15,7 @@
  *    limitations under the License.
  */
 
-#ifndef __TRANSPORT_RENDEZVOUSPARAMETERS_H__
-#define __TRANSPORT_RENDEZVOUSPARAMETERS_H__
+#pragma once
 
 #include <transport/raw/Base.h>
 
@@ -91,5 +90,3 @@ class RendezvousParameters
 };
 
 } // namespace chip
-
-#endif // __TRANSPORT_RENDEZVOUSPARAMETERS_H__
diff --git a/src/transport/RendezvousSession.h b/src/transport/RendezvousSession.h
index c72d7a18bbfb58..9f1a8e92bfbb1f 100644
--- a/src/transport/RendezvousSession.h
+++ b/src/transport/RendezvousSession.h
@@ -20,9 +20,7 @@
  *      This file defines the CHIP RendezvousSession object that maintains a Rendezvous session.
  *
  */
-
-#ifndef __TRANSPORT_RENDEZVOUSSESSION_H__
-#define __TRANSPORT_RENDEZVOUSSESSION_H__
+#pragma once
 
 #include <core/CHIPCore.h>
 #include <protocols/CHIPProtocols.h>
@@ -147,4 +145,3 @@ class RendezvousSession : public SecurePairingSessionDelegate,
 };
 
 } // namespace chip
-#endif // __TRANSPORT_RENDEZVOUSSESSION_H__
diff --git a/src/transport/RendezvousSessionDelegate.h b/src/transport/RendezvousSessionDelegate.h
index f0fcb06cd75cff..490035baeefe3b 100644
--- a/src/transport/RendezvousSessionDelegate.h
+++ b/src/transport/RendezvousSessionDelegate.h
@@ -15,8 +15,7 @@
  *    limitations under the License.
  */
 
-#ifndef __TRANSPORT_RENDEZVOUSSESSIONCALLBACK_H__
-#define __TRANSPORT_RENDEZVOUSSESSIONCALLBACK_H__
+#pragma once
 
 #include <core/CHIPCore.h>
 
@@ -52,5 +51,3 @@ class DLL_EXPORT RendezvousDeviceCredentialsDelegate
 };
 
 } // namespace chip
-
-#endif // __TRANSPORT_RENDEZVOUSSESSIONCALLBACK_H__
diff --git a/src/transport/SecurePairingSession.h b/src/transport/SecurePairingSession.h
index 005284e61b21a6..0ca28629381009 100644
--- a/src/transport/SecurePairingSession.h
+++ b/src/transport/SecurePairingSession.h
@@ -24,8 +24,7 @@
  *
  */
 
-#ifndef __SECUREPAIRINGSESSION_H__
-#define __SECUREPAIRINGSESSION_H__
+#pragma once
 
 #include <core/ReferenceCounted.h>
 #include <crypto/CHIPCryptoPAL.h>
@@ -250,5 +249,3 @@ class SecurePairingUsingTestSecret : public SecurePairingSession
 };
 
 } // namespace chip
-
-#endif // __SECUREPAIRINGSESSION_H__
diff --git a/src/transport/SecureSession.h b/src/transport/SecureSession.h
index 80a7e8a6ffdda0..ac8da5d9ffc28b 100644
--- a/src/transport/SecureSession.h
+++ b/src/transport/SecureSession.h
@@ -23,8 +23,7 @@
  *
  */
 
-#ifndef __SECURESESSION_H__
-#define __SECURESESSION_H__
+#pragma once
 
 #include <core/CHIPCore.h>
 #include <crypto/CHIPCryptoPAL.h>
@@ -134,5 +133,3 @@ class DLL_EXPORT SecureSession
 };
 
 } // namespace chip
-
-#endif // __SECURESESSION_H__
diff --git a/src/transport/SecureSessionMgr.h b/src/transport/SecureSessionMgr.h
index 714a9d13a11f16..173b70cb6f51b1 100644
--- a/src/transport/SecureSessionMgr.h
+++ b/src/transport/SecureSessionMgr.h
@@ -23,8 +23,7 @@
  *
  */
 
-#ifndef __SECURESESSIONMGR_H__
-#define __SECURESESSIONMGR_H__
+#pragma once
 
 #include <utility>
 
@@ -217,5 +216,3 @@ class SecureSessionMgr : public SecureSessionMgrBase
 };
 
 } // namespace chip
-
-#endif // __SECURESESSIONMGR_H__
diff --git a/src/transport/raw/Base.h b/src/transport/raw/Base.h
index c68e3327ce97b3..da20fc3ba45fec 100644
--- a/src/transport/raw/Base.h
+++ b/src/transport/raw/Base.h
@@ -21,8 +21,7 @@
  *    classes (UDP, TCP, BLE, ....)
  */
 
-#ifndef TRANSPORT_BASE_H_
-#define TRANSPORT_BASE_H_
+#pragma once
 
 #include <core/CHIPError.h>
 #include <core/ReferenceCounted.h>
@@ -118,5 +117,3 @@ class Base : public ReferenceCounted<Base>
 
 } // namespace Transport
 } // namespace chip
-
-#endif // TRANSPORT_BASE_H_
diff --git a/src/transport/raw/PeerAddress.h b/src/transport/raw/PeerAddress.h
index cf63064673ae71..febc65c9580fda 100644
--- a/src/transport/raw/PeerAddress.h
+++ b/src/transport/raw/PeerAddress.h
@@ -21,8 +21,7 @@
  *
  */
 
-#ifndef PEER_ADDRESS_H_
-#define PEER_ADDRESS_H_
+#pragma once
 
 #include <stdio.h>
 
@@ -171,5 +170,3 @@ class PeerAddress
 
 } // namespace Transport
 } // namespace chip
-
-#endif // PEER_ADDRESS_H_
diff --git a/src/transport/raw/TCP.h b/src/transport/raw/TCP.h
index c1eb2bc1273fe6..0888e3adf4a358 100644
--- a/src/transport/raw/TCP.h
+++ b/src/transport/raw/TCP.h
@@ -22,8 +22,7 @@
  *      It binds to any available local addr and port and begins listening.
  */
 
-#ifndef __TCPTRANSPORT_H__
-#define __TCPTRANSPORT_H__
+#pragma once
 
 #include <algorithm>
 #include <utility>
@@ -247,5 +246,3 @@ class TCP : public TCPBase
 
 } // namespace Transport
 } // namespace chip
-
-#endif // __TCPTRANSPORT_H__
diff --git a/src/transport/raw/Tuple.h b/src/transport/raw/Tuple.h
index 85dffc88f6a52e..bd887ba52fcaee 100644
--- a/src/transport/raw/Tuple.h
+++ b/src/transport/raw/Tuple.h
@@ -21,8 +21,7 @@
  * Defines a compound transport type (tuple) that can merge several transports
  * to look like a single one.
  */
-#ifndef TRANSPORT_TUPLE_H_
-#define TRANSPORT_TUPLE_H_
+#pragma once
 
 #include <tuple>
 #include <type_traits>
@@ -238,5 +237,3 @@ class Tuple : public Base
 
 } // namespace Transport
 } // namespace chip
-
-#endif // TRANSPORT_TUPLE_H_
diff --git a/src/transport/raw/UDP.h b/src/transport/raw/UDP.h
index 72b57b0f6d0edb..d2dfcc36ad5812 100644
--- a/src/transport/raw/UDP.h
+++ b/src/transport/raw/UDP.h
@@ -23,8 +23,7 @@
  *
  */
 
-#ifndef __UDPTRANSPORT_H__
-#define __UDPTRANSPORT_H__
+#pragma once
 
 #include <utility>
 
@@ -126,5 +125,3 @@ class DLL_EXPORT UDP : public Base
 
 } // namespace Transport
 } // namespace chip
-
-#endif // __UDPTRANSPORT_H__
diff --git a/src/transport/retransmit/Cache.h b/src/transport/retransmit/Cache.h
index c70ca1f77dced8..16227259b58743 100644
--- a/src/transport/retransmit/Cache.h
+++ b/src/transport/retransmit/Cache.h
@@ -14,8 +14,7 @@
  *    See the License for the specific language governing permissions and
  *    limitations under the License.
  */
-#ifndef RETRANSIMIT_CACHE_H_
-#define RETRANSIMIT_CACHE_H_
+#pragma once
 
 #include <bitset>
 #include <cstddef>
@@ -177,5 +176,3 @@ class Cache
 
 } // namespace Retransmit
 } // namespace chip
-
-#endif // RETRANSIMIT_CACHE_H_
diff --git a/src/transport/tests/TestTransportLayer.h b/src/transport/tests/TestTransportLayer.h
index 61c78781688bfb..9e7588355080ad 100644
--- a/src/transport/tests/TestTransportLayer.h
+++ b/src/transport/tests/TestTransportLayer.h
@@ -22,8 +22,7 @@
  *
  */
 
-#ifndef TESTTRANSPORTLAYER_H
-#define TESTTRANSPORTLAYER_H
+#pragma once
 
 #ifdef __cplusplus
 extern "C" {
@@ -40,5 +39,3 @@ int TestUDP(void);
 #ifdef __cplusplus
 }
 #endif
-
-#endif // TESTTRANSPORTLAYER_H