diff --git a/MAINTAINERS.yml b/MAINTAINERS.yml
index a3780ed8ae7..0e168504467 100644
--- a/MAINTAINERS.yml
+++ b/MAINTAINERS.yml
@@ -391,7 +391,6 @@ Bluetooth Host:
     - include/zephyr/bluetooth/iso.h
     - include/zephyr/bluetooth/controller.h
     - include/zephyr/bluetooth/mesh.h
-    - include/zephyr/bluetooth/testing.h
     - doc/connectivity/bluetooth/bluetooth-ctlr-arch.rst
     - doc/connectivity/bluetooth/autopts/
     - doc/connectivity/bluetooth/img/ctlr*
@@ -449,7 +448,6 @@ Bluetooth Mesh:
     - doc/connectivity/bluetooth/api/mesh/
     - include/zephyr/bluetooth/mesh/
     - include/zephyr/bluetooth/mesh.h
-    - include/zephyr/bluetooth/testing.h
     - samples/bluetooth/mesh*/
     - subsys/bluetooth/mesh/
     - tests/bluetooth/mesh*/
diff --git a/subsys/bluetooth/host/CMakeLists.txt b/subsys/bluetooth/host/CMakeLists.txt
index ae574e2b5bf..1b1b6a58543 100644
--- a/subsys/bluetooth/host/CMakeLists.txt
+++ b/subsys/bluetooth/host/CMakeLists.txt
@@ -8,7 +8,6 @@ add_subdirectory_ifdef(CONFIG_BT_CLASSIC classic)
 zephyr_library_sources_ifdef(CONFIG_BT_HCI_RAW          hci_raw.c hci_common.c)
 zephyr_library_sources_ifdef(CONFIG_BT_MONITOR          monitor.c)
 zephyr_library_sources_ifdef(CONFIG_BT_TINYCRYPT_ECC    hci_ecc.c)
-zephyr_library_sources_ifdef(CONFIG_BT_TESTING          testing.c)
 zephyr_library_sources_ifdef(CONFIG_BT_SETTINGS         settings.c)
 zephyr_library_sources_ifdef(CONFIG_BT_HOST_CCM         aes_ccm.c)
 zephyr_library_sources_ifdef(CONFIG_BT_LONG_WQ          long_wq.c)
diff --git a/subsys/bluetooth/host/testing.h b/subsys/bluetooth/host/testing.h
deleted file mode 100644
index 8ed1fa61e46..00000000000
--- a/subsys/bluetooth/host/testing.h
+++ /dev/null
@@ -1,23 +0,0 @@
-/**
- * @file testing.h
- * @brief Internal API for Bluetooth testing.
- */
-
-/*
- * Copyright (c) 2017 Intel Corporation
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-#if defined(CONFIG_BT_MESH)
-void bt_test_mesh_net_recv(uint8_t ttl, uint8_t ctl, uint16_t src, uint16_t dst,
-			   const void *payload, size_t payload_len);
-void bt_test_mesh_model_recv(uint16_t src, uint16_t dst, const void *payload,
-			     size_t payload_len);
-void bt_test_mesh_model_bound(uint16_t addr, const struct bt_mesh_model *model,
-			      uint16_t key_idx);
-void bt_test_mesh_model_unbound(uint16_t addr, const struct bt_mesh_model *model,
-				uint16_t key_idx);
-void bt_test_mesh_prov_invalid_bearer(uint8_t opcode);
-void bt_test_mesh_trans_incomp_timer_exp(void);
-#endif /* CONFIG_BT_MESH */
diff --git a/subsys/bluetooth/mesh/CMakeLists.txt b/subsys/bluetooth/mesh/CMakeLists.txt
index 2009601f0f8..ac69a9234d8 100644
--- a/subsys/bluetooth/mesh/CMakeLists.txt
+++ b/subsys/bluetooth/mesh/CMakeLists.txt
@@ -130,3 +130,5 @@ zephyr_library_link_libraries_ifdef(CONFIG_MBEDTLS mbedTLS)
 zephyr_library_include_directories_ifdef(CONFIG_BUILD_WITH_TFM
   $<TARGET_PROPERTY:tfm,TFM_BINARY_DIR>/api_ns/interface/include
 )
+
+zephyr_library_sources_ifdef(CONFIG_BT_TESTING testing.c)
diff --git a/subsys/bluetooth/mesh/access.c b/subsys/bluetooth/mesh/access.c
index e095d9babdb..a9e8d918de7 100644
--- a/subsys/bluetooth/mesh/access.c
+++ b/subsys/bluetooth/mesh/access.c
@@ -16,7 +16,7 @@
 
 #include "common/bt_str.h"
 
-#include "host/testing.h"
+#include "testing.h"
 
 #include "mesh.h"
 #include "net.h"
diff --git a/subsys/bluetooth/mesh/cfg_srv.c b/subsys/bluetooth/mesh/cfg_srv.c
index 268f883d8b8..36d912f37a5 100644
--- a/subsys/bluetooth/mesh/cfg_srv.c
+++ b/subsys/bluetooth/mesh/cfg_srv.c
@@ -18,7 +18,7 @@
 
 #include "common/bt_str.h"
 
-#include "host/testing.h"
+#include "testing.h"
 
 #include "mesh.h"
 #include "net.h"
diff --git a/subsys/bluetooth/mesh/pb_adv.c b/subsys/bluetooth/mesh/pb_adv.c
index e5946e739d6..be5a88c56be 100644
--- a/subsys/bluetooth/mesh/pb_adv.c
+++ b/subsys/bluetooth/mesh/pb_adv.c
@@ -9,7 +9,7 @@
 #include <zephyr/bluetooth/conn.h>
 #include <zephyr/bluetooth/mesh.h>
 #include <zephyr/net/buf.h>
-#include "host/testing.h"
+#include "testing.h"
 #include "net.h"
 #include "crypto.h"
 #include "beacon.h"
diff --git a/subsys/bluetooth/host/testing.c b/subsys/bluetooth/mesh/testing.c
similarity index 98%
rename from subsys/bluetooth/host/testing.c
rename to subsys/bluetooth/mesh/testing.c
index 16fb15b94e6..75c0964e792 100644
--- a/subsys/bluetooth/host/testing.c
+++ b/subsys/bluetooth/mesh/testing.c
@@ -7,8 +7,6 @@
 #include <zephyr/kernel.h>
 #include <stddef.h>
 
-#include <zephyr/bluetooth/testing.h>
-
 #if defined(CONFIG_BT_MESH)
 #include "mesh/net.h"
 #include "mesh/lpn.h"
diff --git a/include/zephyr/bluetooth/testing.h b/subsys/bluetooth/mesh/testing.h
similarity index 79%
rename from include/zephyr/bluetooth/testing.h
rename to subsys/bluetooth/mesh/testing.h
index 74806a53a6d..95937184815 100644
--- a/include/zephyr/bluetooth/testing.h
+++ b/subsys/bluetooth/mesh/testing.h
@@ -8,26 +8,14 @@
  *
  * SPDX-License-Identifier: Apache-2.0
  */
-#ifndef ZEPHYR_INCLUDE_BLUETOOTH_TESTING_H_
-#define ZEPHYR_INCLUDE_BLUETOOTH_TESTING_H_
 
 #include <stdint.h>
+#include <zephyr/sys/slist.h>
 
 #if defined(CONFIG_BT_MESH)
 #include <zephyr/bluetooth/mesh.h>
 #endif /* CONFIG_BT_MESH */
 
-/**
- * @brief Bluetooth testing
- * @defgroup bt_test_cb Bluetooth testing callbacks
- * @ingroup bluetooth
- * @{
- */
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 /** @brief Bluetooth Testing callbacks structure.
  *
  *  Callback structure to be used for Bluetooth testing purposes.
@@ -95,12 +83,15 @@ int bt_test_mesh_lpn_group_remove(uint16_t *groups, size_t groups_count);
  */
 int bt_test_mesh_rpl_clear(void);
 
-/**
- * @}
- */
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* ZEPHYR_INCLUDE_BLUETOOTH_TESTING_H_ */
+#if defined(CONFIG_BT_MESH)
+void bt_test_mesh_net_recv(uint8_t ttl, uint8_t ctl, uint16_t src, uint16_t dst,
+			   const void *payload, size_t payload_len);
+void bt_test_mesh_model_recv(uint16_t src, uint16_t dst, const void *payload,
+			     size_t payload_len);
+void bt_test_mesh_model_bound(uint16_t addr, const struct bt_mesh_model *model,
+			      uint16_t key_idx);
+void bt_test_mesh_model_unbound(uint16_t addr, const struct bt_mesh_model *model,
+				uint16_t key_idx);
+void bt_test_mesh_prov_invalid_bearer(uint8_t opcode);
+void bt_test_mesh_trans_incomp_timer_exp(void);
+#endif /* CONFIG_BT_MESH */
diff --git a/subsys/bluetooth/mesh/transport.c b/subsys/bluetooth/mesh/transport.c
index 66678911f1b..c95fa81f9f6 100644
--- a/subsys/bluetooth/mesh/transport.c
+++ b/subsys/bluetooth/mesh/transport.c
@@ -19,8 +19,6 @@
 
 #include "common/bt_str.h"
 
-#include "host/testing.h"
-
 #include "crypto.h"
 #include "mesh.h"
 #include "net.h"
@@ -33,6 +31,7 @@
 #include "sar_cfg_internal.h"
 #include "settings.h"
 #include "heartbeat.h"
+#include "testing.h"
 #include "transport.h"
 #include "va.h"
 
diff --git a/tests/bluetooth/tester/src/audio/btp_vcp.c b/tests/bluetooth/tester/src/audio/btp_vcp.c
index d4561065214..db53f0d27d5 100644
--- a/tests/bluetooth/tester/src/audio/btp_vcp.c
+++ b/tests/bluetooth/tester/src/audio/btp_vcp.c
@@ -10,7 +10,6 @@
 #include <stdint.h>
 #include <zephyr/sys/byteorder.h>
 #include <zephyr/bluetooth/bluetooth.h>
-#include <zephyr/bluetooth/testing.h>
 #include <zephyr/bluetooth/audio/vcp.h>
 #include <zephyr/bluetooth/audio/aics.h>
 #include <zephyr/bluetooth/audio/vocs.h>
diff --git a/tests/bluetooth/tester/src/btp_mesh.c b/tests/bluetooth/tester/src/btp_mesh.c
index 6e6416c8a40..ca8efc4e3fa 100644
--- a/tests/bluetooth/tester/src/btp_mesh.c
+++ b/tests/bluetooth/tester/src/btp_mesh.c
@@ -9,7 +9,6 @@
 #include <assert.h>
 #include <errno.h>
 #include <zephyr/bluetooth/mesh.h>
-#include <zephyr/bluetooth/testing.h>
 #include <zephyr/bluetooth/mesh/cfg.h>
 #include <zephyr/sys/byteorder.h>
 #include <zephyr/settings/settings.h>
@@ -18,6 +17,7 @@
 #include <sar_cfg_internal.h>
 #include <string.h>
 #include "mesh/access.h"
+#include "mesh/testing.h"
 
 #include <zephyr/logging/log.h>
 #define LOG_MODULE_NAME bttester_mesh