diff --git a/CODEOWNERS b/CODEOWNERS
index 8f4482182e..06f6736e1b 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -92,6 +92,7 @@
 /tests/lib/ble_adv/                       @nrfconnect/ncs-bm-test
 /tests/lib/bm_storage/                    @nrfconnect/ncs-bm
 /tests/lib/bm_timer/                      @nrfconnect/ncs-bm @nrfconnect/ncs-bm-test
+/tests/subsys/bluetooth/services/ble_hrs/ @nrfconnect/ncs-bm-test
 
 # Zephyr module
 /zephyr/                                  @nrfconnect/ncs-co-build-system
diff --git a/tests/subsys/bluetooth/services/ble_hrs/CMakeLists.txt b/tests/subsys/bluetooth/services/ble_hrs/CMakeLists.txt
new file mode 100644
index 0000000000..e6a965ad54
--- /dev/null
+++ b/tests/subsys/bluetooth/services/ble_hrs/CMakeLists.txt
@@ -0,0 +1,39 @@
+#
+# Copyright (c) 2025 Nordic Semiconductor ASA
+#
+# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+#
+
+cmake_minimum_required(VERSION 3.20.0)
+
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+
+project(unit_test_ble_hrs)
+
+set(SOFTDEVICE_VARIANT "s115")
+set(SOFTDEVICE_INCLUDE_DIR "${ZEPHYR_NRF_BM_MODULE_DIR}/components/softdevice/\
+${SOFTDEVICE_VARIANT}/${SOFTDEVICE_VARIANT}_API/include")
+
+cmock_handle(${SOFTDEVICE_INCLUDE_DIR}/ble_gatts.h)
+
+target_compile_definitions(app PRIVATE
+  NRF54L15_XXAA
+  SVCALL_AS_NORMAL_FUNCTION
+  SUPPRESS_INLINE_IMPLEMENTATION
+  CONFIG_NRF_SDH_BLE_TOTAL_LINK_COUNT=1
+  CONFIG_BLE_HRS_MAX_BUFFERED_RR_INTERVALS=20
+  CONFIG_NRF_SDH_BLE_GATT_MAX_MTU_SIZE=23
+)
+
+target_include_directories(app PRIVATE
+  ${SOFTDEVICE_INCLUDE_DIR}
+  ${ZEPHYR_NRF_BM_MODULE_DIR}/include
+  ${ZEPHYR_HAL_NORDIC_MODULE_DIR}/nrfx/mdk
+)
+
+# Generate and add test file
+test_runner_generate(src/unity_test.c)
+target_sources(app PRIVATE src/unity_test.c)
+
+# Unit under test
+target_sources(app PRIVATE ${ZEPHYR_NRF_BM_MODULE_DIR}/subsys/bluetooth/services/ble_hrs/hrs.c)
diff --git a/tests/subsys/bluetooth/services/ble_hrs/prj.conf b/tests/subsys/bluetooth/services/ble_hrs/prj.conf
new file mode 100644
index 0000000000..a8788847da
--- /dev/null
+++ b/tests/subsys/bluetooth/services/ble_hrs/prj.conf
@@ -0,0 +1,6 @@
+#
+# Copyright (c) 2025 Nordic Semiconductor ASA
+#
+# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+#
+CONFIG_UNITY=y
diff --git a/tests/subsys/bluetooth/services/ble_hrs/src/unity_test.c b/tests/subsys/bluetooth/services/ble_hrs/src/unity_test.c
new file mode 100644
index 0000000000..76a22d9c5a
--- /dev/null
+++ b/tests/subsys/bluetooth/services/ble_hrs/src/unity_test.c
@@ -0,0 +1,337 @@
+/*
+ * Copyright (c) 2025 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+ */
+#include <unity.h>
+
+#include <errno.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+
+#include <bluetooth/services/ble_hrs.h>
+#include <bluetooth/services/uuid.h>
+
+#include "cmock_ble_gatts.h"
+
+void ble_hrs_evt_handler(struct ble_hrs *hrs, const struct ble_hrs_evt *evt)
+{
+}
+
+void ble_hrs_on_ble_evt(const ble_evt_t *evt, struct ble_hrs *hrs);
+
+uint32_t stub_sd_ble_gatts_hvx(
+	uint16_t conn_handle, const ble_gatts_hvx_params_t *p_hvx_params, int cmock_num_calls)
+{
+	if (p_hvx_params && p_hvx_params->p_len) {
+		*(p_hvx_params->p_len) = 0;
+	}
+	return NRF_SUCCESS;
+}
+
+uint32_t stub_sd_ble_gatts_characteristic_add(
+	uint16_t service_handle,
+	const ble_gatts_char_md_t *p_char_md,
+	const ble_gatts_attr_t *p_attr_char_value,
+	ble_gatts_char_handles_t *p_handles,
+	int cmock_num_calls)
+{
+	TEST_ASSERT_NOT_NULL(p_char_md);
+	TEST_ASSERT_NOT_NULL(p_attr_char_value);
+	TEST_ASSERT_NOT_NULL(p_handles);
+	if (p_attr_char_value->p_uuid->uuid == BLE_UUID_HEART_RATE_MEASUREMENT_CHAR) {
+		TEST_ASSERT_EQUAL(BLE_GATTS_VLOC_STACK, p_char_md->p_cccd_md->vloc);
+		TEST_ASSERT_TRUE(p_char_md->char_props.notify);
+		TEST_ASSERT_TRUE(p_attr_char_value->p_attr_md->vlen);
+		TEST_ASSERT_GREATER_OR_EQUAL(0, p_attr_char_value->init_len);
+		TEST_ASSERT_TRUE(p_attr_char_value->max_len);
+	} else if (p_attr_char_value->p_uuid->uuid == BLE_UUID_BODY_SENSOR_LOCATION_CHAR) {
+		TEST_ASSERT_TRUE(p_char_md->char_props.read);
+		TEST_ASSERT_EQUAL(sizeof(uint8_t), p_attr_char_value->init_len);
+		TEST_ASSERT_EQUAL(sizeof(uint8_t), p_attr_char_value->max_len);
+		TEST_ASSERT_EQUAL(BLE_GATTS_VLOC_STACK, p_attr_char_value->p_attr_md->vloc);
+	} else {
+		TEST_FAIL_MESSAGE("Unexpected UUID in characteristic add stub");
+	}
+	TEST_ASSERT_EQUAL(BLE_UUID_TYPE_BLE, p_attr_char_value->p_uuid->type);
+	TEST_ASSERT_NOT_NULL(p_attr_char_value->p_value);
+
+	return NRF_SUCCESS;
+}
+
+void test_ble_hrs_rr_interval_add(void)
+{
+	struct ble_hrs hrs = {
+		.evt_handler = ble_hrs_evt_handler,
+		.service_handle = 0,
+		.conn_handle = BLE_CONN_HANDLE_INVALID,
+		.rr_interval_count = 0,
+		.max_hrm_len = 0,
+		.is_sensor_contact_supported = false,
+		.is_sensor_contact_detected = false
+	};
+	int err;
+
+	/* Initialize the heart rate service. */
+	memset(&hrs, 0, sizeof(hrs));
+
+	/* Add RR interval measurement. */
+	err = ble_hrs_rr_interval_add(&hrs, 100);
+	TEST_ASSERT_EQUAL(0, err);
+	TEST_ASSERT_EQUAL(1, hrs.rr_interval_count);
+	TEST_ASSERT_EQUAL(100, hrs.rr_interval[0]);
+
+	/* Add another RR interval measurement. */
+	err = ble_hrs_rr_interval_add(&hrs, 200);
+	TEST_ASSERT_EQUAL(0, err);
+	TEST_ASSERT_EQUAL(2, hrs.rr_interval_count);
+	TEST_ASSERT_EQUAL(200, hrs.rr_interval[1]);
+
+	/* Add a third RR interval measurement. */
+	err = ble_hrs_rr_interval_add(&hrs, 300);
+	TEST_ASSERT_EQUAL(0, err);
+	TEST_ASSERT_EQUAL(3, hrs.rr_interval_count);
+	TEST_ASSERT_EQUAL(300, hrs.rr_interval[2]);
+}
+
+void test_ble_hrs_rr_interval_add_efault(void)
+{
+	/* Try to use null for hrs struct */
+	int err = ble_hrs_rr_interval_add(NULL, 0);
+
+	TEST_ASSERT_EQUAL(-EFAULT, err);
+}
+
+void test_ble_hrs_rr_interval_add_overflow(void)
+{
+	struct ble_hrs hrs = {
+		.max_hrm_len = CONFIG_BLE_HRS_MAX_BUFFERED_RR_INTERVALS * sizeof(uint16_t) + 1
+	};
+	uint16_t rr_interval_second = 0;
+	int err;
+
+	/* Fill the buffer to max */
+	for (int i = 0; i < CONFIG_BLE_HRS_MAX_BUFFERED_RR_INTERVALS; i++) {
+		err = ble_hrs_rr_interval_add(&hrs, i + 1);
+		TEST_ASSERT_EQUAL(0, err);
+	}
+	rr_interval_second = hrs.rr_interval[1];
+
+	/* Now adding one more should remove the first one and add new to last*/
+	err = ble_hrs_rr_interval_add(&hrs, 999);
+
+	TEST_ASSERT_EQUAL(0, err);
+	TEST_ASSERT_EQUAL(CONFIG_BLE_HRS_MAX_BUFFERED_RR_INTERVALS, hrs.rr_interval_count);
+	TEST_ASSERT_EQUAL(999, hrs.rr_interval[CONFIG_BLE_HRS_MAX_BUFFERED_RR_INTERVALS - 1]);
+	TEST_ASSERT_EQUAL(rr_interval_second, hrs.rr_interval[0]);
+}
+
+void test_ble_hrs_rr_interval_buffer_is_full(void)
+{
+	struct ble_hrs hrs = {0};
+	int err;
+
+	/* Check if buffer is empty */
+	TEST_ASSERT_FALSE(ble_hrs_rr_interval_buffer_is_full(&hrs));
+
+	/* Fill the buffer to max */
+	for (int i = 0; i < CONFIG_BLE_HRS_MAX_BUFFERED_RR_INTERVALS; i++) {
+		err = ble_hrs_rr_interval_add(&hrs, i + 1);
+		TEST_ASSERT_EQUAL(0, err);
+	}
+
+	/* Check if buffer is full */
+	TEST_ASSERT_TRUE(ble_hrs_rr_interval_buffer_is_full(&hrs));
+}
+
+void test_ble_hrs_sensor_contact_supported_set(void)
+{
+	struct ble_hrs hrs = {0};
+	int err;
+
+	hrs.conn_handle = BLE_CONN_HANDLE_INVALID;
+	/* Set sensor contact supported to true */
+	err = ble_hrs_sensor_contact_supported_set(&hrs, true);
+	TEST_ASSERT_EQUAL(0, err);
+	TEST_ASSERT_TRUE(hrs.is_sensor_contact_supported);
+}
+
+void test_ble_hrs_sensor_contact_supported_set_eisconn(void)
+{
+	struct ble_hrs hrs = {0};
+	int err;
+
+	/* Try to set sensor contact supported while in connection
+	 * Simulate being in a connection
+	 */
+	const ble_evt_t evt = {
+		.header.evt_id = BLE_GAP_EVT_CONNECTED
+	};
+	ble_hrs_on_ble_evt(&evt, &hrs);
+	err = ble_hrs_sensor_contact_supported_set(&hrs, true);
+	TEST_ASSERT_EQUAL(-EISCONN, err);
+}
+
+void test_ble_hrs_sensor_contact_supported_set_efault(void)
+{
+	int err;
+
+	/* Try to use null for hrs struct */
+	err = ble_hrs_sensor_contact_supported_set(NULL, false);
+	TEST_ASSERT_EQUAL(-EFAULT, err);
+}
+
+void test_ble_hrs_sensor_contact_detected_update(void)
+{
+	struct ble_hrs hrs = {0};
+	int err;
+
+	/* Update sensor contact detected state */
+	err = ble_hrs_sensor_contact_detected_update(&hrs, true);
+	TEST_ASSERT_EQUAL(0, err);
+	TEST_ASSERT_TRUE(hrs.is_sensor_contact_detected);
+}
+
+void test_ble_hrs_body_sensor_location_set(void)
+{
+	struct ble_hrs hrs = {0};
+	uint8_t body_sensor_location = BLE_HRS_BODY_SENSOR_LOCATION_FINGER;
+	int err;
+
+	__cmock_sd_ble_gatts_value_set_ExpectAndReturn(
+	hrs.conn_handle, hrs.bsl_handles.value_handle, NULL, NRF_SUCCESS);
+	__cmock_sd_ble_gatts_value_set_IgnoreArg_p_value();
+	err = ble_hrs_body_sensor_location_set(&hrs, body_sensor_location);
+	TEST_ASSERT_EQUAL(0, err);
+
+	__cmock_sd_ble_gatts_value_set_ExpectAndReturn(
+	hrs.conn_handle, hrs.bsl_handles.value_handle, NULL, NRF_ERROR_INVALID_ADDR);
+	__cmock_sd_ble_gatts_value_set_IgnoreArg_p_value();
+	err = ble_hrs_body_sensor_location_set(&hrs, body_sensor_location);
+	TEST_ASSERT_EQUAL(-EINVAL, err);
+
+	/* Try to use null for hrs struct */
+	err = ble_hrs_body_sensor_location_set(NULL, body_sensor_location);
+	TEST_ASSERT_EQUAL(-EFAULT, err);
+}
+
+void test_ble_hrs_heart_rate_measurement_send_enotconn(void)
+{
+	struct ble_hrs hrs = {
+		.evt_handler = ble_hrs_evt_handler,
+		.service_handle = 0,
+		.conn_handle = BLE_CONN_HANDLE_INVALID,
+		.rr_interval_count = 2,
+		.max_hrm_len = 0,
+		.is_sensor_contact_supported = true,
+		.is_sensor_contact_detected = false
+	};
+	uint16_t heart_rate_measurement = 72;
+	int err;
+
+	__cmock_sd_ble_gatts_hvx_IgnoreAndReturn(BLE_ERROR_INVALID_CONN_HANDLE);
+	err = ble_hrs_heart_rate_measurement_send(&hrs, heart_rate_measurement);
+	TEST_ASSERT_EQUAL(-ENOTCONN, err);
+}
+
+void test_ble_hrs_heart_rate_measurement_send_epipe(void)
+{
+	struct ble_hrs hrs = {
+		.evt_handler = ble_hrs_evt_handler,
+		.service_handle = 0,
+		.conn_handle = BLE_CONN_HANDLE_INVALID,
+		.rr_interval_count = 2,
+		.max_hrm_len = 0,
+		.is_sensor_contact_supported = true,
+		.is_sensor_contact_detected = false
+	};
+	uint16_t heart_rate_measurement = 72;
+	int err;
+
+	__cmock_sd_ble_gatts_hvx_ExpectAndReturn(hrs.conn_handle, NULL, NRF_ERROR_INVALID_STATE);
+	__cmock_sd_ble_gatts_hvx_IgnoreArg_p_hvx_params();
+	err = ble_hrs_heart_rate_measurement_send(&hrs, heart_rate_measurement);
+	TEST_ASSERT_EQUAL(-EPIPE, err);
+}
+
+void test_ble_hrs_heart_rate_measurement_send_einval(void)
+{
+	struct ble_hrs hrs = {
+		.evt_handler = ble_hrs_evt_handler,
+		.service_handle = 0,
+		.conn_handle = BLE_CONN_HANDLE_INVALID,
+		.rr_interval_count = 2,
+		.max_hrm_len = 0,
+		.is_sensor_contact_supported = true,
+		.is_sensor_contact_detected = false
+	};
+	uint16_t heart_rate_measurement = 72;
+	int err;
+
+	__cmock_sd_ble_gatts_hvx_ExpectAndReturn(hrs.conn_handle, NULL, NRF_ERROR_BUSY);
+	__cmock_sd_ble_gatts_hvx_IgnoreArg_p_hvx_params();
+	err = ble_hrs_heart_rate_measurement_send(&hrs, heart_rate_measurement);
+	TEST_ASSERT_EQUAL(-EINVAL, err);
+
+	/* Set up the stub to manipulate p_len */
+	__cmock_sd_ble_gatts_hvx_Stub(stub_sd_ble_gatts_hvx);
+	err = ble_hrs_heart_rate_measurement_send(&hrs, heart_rate_measurement);
+	TEST_ASSERT_EQUAL(-EINVAL, err);
+}
+
+void test_ble_hrs_heart_rate_measurement_send_efault(void)
+{
+	uint16_t heart_rate_measurement = 72;
+	int err;
+
+	err = ble_hrs_heart_rate_measurement_send(NULL, heart_rate_measurement);
+	TEST_ASSERT_EQUAL(-EFAULT, err);
+
+}
+
+void test_ble_hrs_init_efault(void)
+{
+	int err;
+
+	err = ble_hrs_init(NULL, NULL);
+	TEST_ASSERT_EQUAL(-EFAULT, err);
+}
+
+void test_ble_hrs_init_einval(void)
+{
+	struct ble_hrs hrs = {0};
+	struct ble_hrs_config hrs_config = {
+		.evt_handler = ble_hrs_evt_handler,
+		.is_sensor_contact_supported = true,
+		.body_sensor_location = (uint8_t[]){ BLE_HRS_BODY_SENSOR_LOCATION_FINGER }
+	};
+	int err;
+
+	__cmock_sd_ble_gatts_service_add_IgnoreAndReturn(NRF_ERROR_INVALID_ADDR);
+	err = ble_hrs_init(&hrs, &hrs_config);
+	TEST_ASSERT_EQUAL(-EINVAL, err);
+}
+
+void test_ble_hrs_init(void)
+{
+	struct ble_hrs hrs = {0};
+	struct ble_hrs_config hrs_config = {
+		.evt_handler = ble_hrs_evt_handler,
+		.is_sensor_contact_supported = true,
+		.body_sensor_location = (uint8_t[]){ BLE_HRS_BODY_SENSOR_LOCATION_FINGER }
+	};
+	int err;
+
+	__cmock_sd_ble_gatts_service_add_IgnoreAndReturn(NRF_SUCCESS);
+	__cmock_sd_ble_gatts_characteristic_add_Stub(stub_sd_ble_gatts_characteristic_add);
+	err = ble_hrs_init(&hrs, &hrs_config);
+	TEST_ASSERT_EQUAL(0, err);
+}
+
+extern int unity_main(void);
+
+int main(void)
+{
+	return unity_main();
+}
diff --git a/tests/subsys/bluetooth/services/ble_hrs/testcase.yaml b/tests/subsys/bluetooth/services/ble_hrs/testcase.yaml
new file mode 100644
index 0000000000..e8b5db8421
--- /dev/null
+++ b/tests/subsys/bluetooth/services/ble_hrs/testcase.yaml
@@ -0,0 +1,4 @@
+tests:
+  lib.ble_hrs:
+    platform_allow: native_sim
+    tags: unittest