diff --git a/doc/releases/release-notes-4.3.rst b/doc/releases/release-notes-4.3.rst
index 90bae2a48646b..3d0bff87a8c98 100644
--- a/doc/releases/release-notes-4.3.rst
+++ b/doc/releases/release-notes-4.3.rst
@@ -57,6 +57,7 @@ Removed APIs and options
 * The TinyCrypt library was removed as the upstream version is no longer maintained.
   PSA Crypto API is now the recommended cryptographic library for Zephyr.
 * The legacy pipe object API was removed. Use the new pipe API instead.
+* ``bt_le_set_auto_conn``
 
 Deprecated APIs and options
 ===========================
diff --git a/include/zephyr/bluetooth/conn.h b/include/zephyr/bluetooth/conn.h
index 2f9b796e1ec14..67c3db64e92a1 100644
--- a/include/zephyr/bluetooth/conn.h
+++ b/include/zephyr/bluetooth/conn.h
@@ -1639,23 +1639,6 @@ int bt_conn_le_create_auto(const struct bt_conn_le_create_param *create_param,
  */
 int bt_conn_create_auto_stop(void);
 
-/** @brief Automatically connect to remote device if it's in range.
- *
- *  This function enables/disables automatic connection initiation.
- *  Every time the device loses the connection with peer, this connection
- *  will be re-established if connectable advertisement from peer is received.
- *
- *  @note Auto connect is disabled during explicit scanning.
- *
- *  @param addr Remote Bluetooth address.
- *  @param param If non-NULL, auto connect is enabled with the given
- *  parameters. If NULL, auto connect is disabled.
- *
- *  @return Zero on success or error code otherwise.
- */
-__deprecated int bt_le_set_auto_conn(const bt_addr_le_t *addr,
-				     const struct bt_le_conn_param *param);
-
 /** @brief Set security level for a connection.
  *
  *  This function enable security (encryption) for a connection. If the device
diff --git a/subsys/bluetooth/host/conn.c b/subsys/bluetooth/host/conn.c
index fb31f879191e0..ad627bcdf175f 100644
--- a/subsys/bluetooth/host/conn.c
+++ b/subsys/bluetooth/host/conn.c
@@ -3994,65 +3994,6 @@ int bt_conn_le_create_synced(const struct bt_le_ext_adv *adv,
 	*ret_conn = conn;
 	return 0;
 }
-
-#if !defined(CONFIG_BT_FILTER_ACCEPT_LIST)
-int bt_le_set_auto_conn(const bt_addr_le_t *addr,
-			const struct bt_le_conn_param *param)
-{
-	struct bt_conn *conn;
-
-	if (!atomic_test_bit(bt_dev.flags, BT_DEV_READY)) {
-		return -EAGAIN;
-	}
-
-	if (param && !bt_le_conn_params_valid(param)) {
-		return -EINVAL;
-	}
-
-	if (!bt_id_scan_random_addr_check()) {
-		return -EINVAL;
-	}
-
-	/* Only default identity is supported */
-	conn = bt_conn_lookup_addr_le(BT_ID_DEFAULT, addr);
-	if (!conn) {
-		conn = bt_conn_add_le(BT_ID_DEFAULT, addr);
-		if (!conn) {
-			return -ENOMEM;
-		}
-	}
-
-	if (param) {
-		bt_conn_set_param_le(conn, param);
-
-		if (!atomic_test_and_set_bit(conn->flags,
-					     BT_CONN_AUTO_CONNECT)) {
-			bt_conn_ref(conn);
-		}
-	} else {
-		if (atomic_test_and_clear_bit(conn->flags,
-					      BT_CONN_AUTO_CONNECT)) {
-			bt_conn_unref(conn);
-			if (conn->state == BT_CONN_SCAN_BEFORE_INITIATING) {
-				bt_conn_set_state(conn, BT_CONN_DISCONNECTED);
-			}
-		}
-	}
-
-	int err = 0;
-	if (conn->state == BT_CONN_DISCONNECTED &&
-	    atomic_test_bit(bt_dev.flags, BT_DEV_READY)) {
-		if (param) {
-			bt_conn_set_state(conn, BT_CONN_SCAN_BEFORE_INITIATING);
-			err = bt_le_scan_user_add(BT_LE_SCAN_USER_CONN);
-		}
-	}
-
-	bt_conn_unref(conn);
-
-	return err;
-}
-#endif /* !defined(CONFIG_BT_FILTER_ACCEPT_LIST) */
 #endif /* CONFIG_BT_CENTRAL */
 
 int bt_conn_le_conn_update(struct bt_conn *conn,