diff --git a/features/nanostack/nanostack-hal-mbed-cmsis-rtos/mbed_lib.json b/features/nanostack/nanostack-hal-mbed-cmsis-rtos/mbed_lib.json
index 81d69b709d..12a4e1f8af 100644
--- a/features/nanostack/nanostack-hal-mbed-cmsis-rtos/mbed_lib.json
+++ b/features/nanostack/nanostack-hal-mbed-cmsis-rtos/mbed_lib.json
@@ -16,6 +16,14 @@
         "event-loop-use-mbed-events": {
             "help": "Use Mbed OS global event queue for Nanostack event loop, rather than our own thread.",
             "value": false
+        },
+        "use-kvstore": {
+            "help": "Use Mbed OS KVStore API instead of filesystem. Default: false",
+            "value": false
+        },
+        "kvstore-path": {
+            "help": "Path of KVStore partition. String, Default \"/kv/\"",
+            "value": "\"/kv/\""
         }
     }
 }
diff --git a/features/nanostack/nanostack-hal-mbed-cmsis-rtos/ns_file_system_api.cpp b/features/nanostack/nanostack-hal-mbed-cmsis-rtos/ns_file_system_api.cpp
new file mode 100644
index 0000000000..c88ca8aaee
--- /dev/null
+++ b/features/nanostack/nanostack-hal-mbed-cmsis-rtos/ns_file_system_api.cpp
@@ -0,0 +1,139 @@
+/*
+ * Copyright (c) 2020, Arm Limited and affiliates.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <new>
+#include <string.h>
+#include "mbed_error.h"
+#include "kvstore_global_api.h"
+#include "kv_config.h"
+#if MBED_CONF_NANOSTACK_HAL_USE_KVSTORE == 1
+#include "ns_file_system.h"
+#endif
+
+#define TRACE_GROUP "kvs"
+
+#if MBED_CONF_NANOSTACK_HAL_USE_KVSTORE == 1
+
+static NS_FILE ns_file_system_api_open(const char *filename, const char *mode);
+static int ns_file_system_api_close(NS_FILE *handle);
+static int ns_file_system_api_remove(const char *filename);
+static size_t ns_file_system_api_write(NS_FILE *handle, const void *buffer, size_t size);
+static size_t ns_file_system_api_read(NS_FILE *handle, void *buffer, size_t size);
+static int ns_file_system_api_size(NS_FILE *handle, size_t *size);
+
+extern "C" {
+    void ns_file_system_api_init(void)
+    {
+        ns_file_system_set_root_path(MBED_CONF_NANOSTACK_HAL_KVSTORE_PATH);
+        ns_file_system_callbacks_set(ns_file_system_api_open, ns_file_system_api_close, ns_file_system_api_remove, ns_file_system_api_write, ns_file_system_api_read, ns_file_system_api_size);
+    }
+}
+
+static NS_FILE ns_file_system_api_open(const char *filename, const char *mode)
+{
+    if (!filename || (*mode != 'r' && *mode != 'w')) {
+        return NULL;
+    }
+
+    uint16_t file_name_len = strlen(filename);
+    if (file_name_len == 0) {
+        return NULL;
+    }
+
+    char *full_name_key = new (std::nothrow) char[file_name_len + sizeof(char)];
+    if (!full_name_key) {
+        return NULL;
+    }
+
+    strcpy(full_name_key, filename);
+
+    return (NS_FILE) full_name_key;
+}
+
+static int ns_file_system_api_close(NS_FILE *handle)
+{
+    if (!handle) {
+        return -1;
+    }
+    char *full_name_key = (char *) handle;
+    delete full_name_key;
+    return 0;
+}
+
+static int ns_file_system_api_remove(const char *filename)
+{
+    if (!filename) {
+        return -1;
+    }
+
+    int ret = kv_remove(filename);
+
+    if (ret == MBED_SUCCESS) {
+        return 0;
+    }
+    return -1;
+}
+
+static size_t ns_file_system_api_write(NS_FILE *handle, const void *buffer, size_t size)
+{
+    if (!handle || !buffer || size == 0) {
+        return -1;
+    }
+
+    char *full_name_key = (char *) handle;
+    int ret = kv_set(full_name_key, buffer, size, 0);
+
+    if (ret == MBED_SUCCESS) {
+        return size;
+    }
+    return 0;
+}
+
+static size_t ns_file_system_api_read(NS_FILE *handle, void *buffer, size_t size)
+{
+    if (!handle || !buffer || size == 0) {
+        return -1;
+    }
+
+    char *full_name_key = (char *) handle;
+    size_t read_size;
+    int ret = kv_get(full_name_key, buffer, size, &read_size);
+
+    if (ret == MBED_SUCCESS) {
+        return read_size;
+    }
+    return 0;
+}
+
+static int ns_file_system_api_size(NS_FILE *handle, size_t *size)
+{
+    if (!handle || !size) {
+        return -1;
+    }
+    char *full_name_key = (char *) handle;
+
+    kv_info_t info;
+    int ret = kv_get_info(full_name_key, &info);
+
+    if (ret == MBED_SUCCESS) {
+        *size = info.size;
+        return 0;
+    }
+    return -1;
+}
+
+#endif
diff --git a/features/nanostack/nanostack-hal-mbed-cmsis-rtos/ns_file_system_api.h b/features/nanostack/nanostack-hal-mbed-cmsis-rtos/ns_file_system_api.h
new file mode 100644
index 0000000000..c7deebaf98
--- /dev/null
+++ b/features/nanostack/nanostack-hal-mbed-cmsis-rtos/ns_file_system_api.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2020, Arm Limited and affiliates.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FILE_SYSTEM_API_H_
+#define FILE_SYSTEM_API_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void file_system_api_init(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/features/nanostack/nanostack-hal-mbed-cmsis-rtos/ns_hal_init.c b/features/nanostack/nanostack-hal-mbed-cmsis-rtos/ns_hal_init.c
index 9b97d67a4b..9a54bf6f09 100644
--- a/features/nanostack/nanostack-hal-mbed-cmsis-rtos/ns_hal_init.c
+++ b/features/nanostack/nanostack-hal-mbed-cmsis-rtos/ns_hal_init.c
@@ -27,6 +27,7 @@
 
 #include "arm_hal_interrupt_private.h"
 #include "ns_hal_init.h"
+#include "ns_file_system_api.h"
 
 void ns_hal_init(void *heap, size_t h_size, void (*passed_fptr)(heap_fail_t), mem_stat_t *info_ptr)
 {
@@ -43,6 +44,10 @@ void ns_hal_init(void *heap, size_t h_size, void (*passed_fptr)(heap_fail_t), me
     }
     platform_critical_init();
     ns_dyn_mem_init(heap, h_size, passed_fptr, info_ptr);
+#if MBED_CONF_NANOSTACK_HAL_USE_KVSTORE == 1
+    ns_file_system_api_init();
+#endif
+
 #ifndef NS_EXCLUDE_HIGHRES_TIMER
     platform_timer_enable();
 #endif