diff --git a/doc/API/Port_Groups.md b/doc/API/Port_Groups.md
index ce3d307697..051bc403a8 100644
--- a/doc/API/Port_Groups.md
+++ b/doc/API/Port_Groups.md
@@ -69,3 +69,58 @@ Output:
     "message": "Port group New Port Group created"
 }
 ```
+
+### `assign_portgroup`
+
+Assign a Port Group to a list of Ports
+
+Route: `/api/v0/port_groups/:port_group_id/assign`
+
+Input (JSON):
+
+- `port_ids`: *required* - List of Port Ids
+
+Examples:
+
+Dynamic Example:
+
+```curl
+curl -H 'X-Auth-Token: YOURAPITOKENHERE' -X POST -d '{"port_ids": ["4","34","25,"983"]}' https://librenms.org/api/v0/port_groups/3/assign
+```
+
+Output:
+
+```json
+{
+    "status": "ok",
+    "Port Ids 4, 34, 25, 983 have been added to Port Group Id 3": 200
+}
+```
+
+### `remove_portgroup`
+
+Remove a Port Group from a list of Ports
+
+Route: `/api/v0/port_groups/:port_group_id/remove`
+
+Input (JSON):
+
+- `port_ids`: *required* - List of Port Ids
+
+Examples:
+
+Dynamic Example:
+
+```curl
+curl -H 'X-Auth-Token: YOURAPITOKENHERE' -X POST -d '{"port_ids": ["4","34","25,"983"]}' https://librenms.org/api/v0/port_groups/3/remove
+```
+
+Output:
+
+```json
+{
+    "status": "ok",
+    "Port Ids 4, 34, 25, 983 have been removed from Port Group Id 3": 200
+}
+```
+
diff --git a/includes/html/api_functions.inc.php b/includes/html/api_functions.inc.php
index 6c456bbfc2..8cbee466a3 100644
--- a/includes/html/api_functions.inc.php
+++ b/includes/html/api_functions.inc.php
@@ -1934,6 +1934,54 @@ function get_port_groups(Illuminate\Http\Request $request)
     return api_success($groups->makeHidden('pivot')->toArray(), 'groups', 'Found ' . $groups->count() . ' port groups');
 }
 
+function assign_port_group(Illuminate\Http\Request $request)
+{
+    $port_group_id = $request->route('port_group_id');
+    $data = json_decode($request->getContent(), true);
+    $port_id_list = $data['port_ids'];
+
+    if (json_last_error() || ! is_array($data)) {
+        return api_error(400, "We couldn't parse the provided json. " . json_last_error_msg());
+    }
+
+    if (! isset($port_id_list)) {
+        return api_error(400, "Missing data field 'port_ids' " . json_last_error_msg());
+    }
+
+    $port_group = PortGroup::find($port_group_id);
+    if (! isset($port_group)) {
+        return api_error(404, 'Port Group ID ' . $port_group_id . ' not found');
+    }
+
+    $port_group->ports()->attach($port_id_list);
+
+    return api_success(200, 'Port Ids ' . implode(', ', $port_id_list) . ' have been added to Port Group Id ' . $port_group_id);
+}
+
+function remove_port_group(Illuminate\Http\Request $request)
+{
+    $port_group_id = $request->route('port_group_id');
+    $data = json_decode($request->getContent(), true);
+    $port_id_list = $data['port_ids'];
+
+    if (json_last_error() || ! is_array($data)) {
+        return api_error(400, "We couldn't parse the provided json. " . json_last_error_msg());
+    }
+
+    if (! isset($port_id_list)) {
+        return api_error(400, "Missing data field 'port_ids' " . json_last_error_msg());
+    }
+
+    $port_group = PortGroup::find($port_group_id);
+    if (! isset($port_group)) {
+        return api_error(404, 'Port Group ID ' . $port_group_id . ' not found');
+    }
+
+    $port_group->ports()->detach($port_id_list);
+
+    return api_success(200, 'Port Ids ' . implode(', ', $port_id_list) . ' have been removed from Port Group Id ' . $port_group_id);
+}
+
 function add_device_group(Illuminate\Http\Request $request)
 {
     $data = json_decode($request->getContent(), true);
diff --git a/routes/api.php b/routes/api.php
index 7948014720..ccbab6ccef 100644
--- a/routes/api.php
+++ b/routes/api.php
@@ -77,6 +77,8 @@ Route::group(['prefix' => 'v0', 'namespace' => '\App\Api\Controllers'], function
         Route::get('oxidized/config/{device_name}', 'LegacyApiController@get_oxidized_config')->name('get_oxidized_config');
         Route::post('devicegroups', 'LegacyApiController@add_device_group')->name('add_device_group');
         Route::post('port_groups', 'LegacyApiController@add_port_group')->name('add_port_group');
+        Route::post('port_groups/{port_group_id}/assign', 'LegacyApiController@assign_port_group')->name('assign_port_group');
+        Route::post('port_groups/{port_group_id}/remove', 'LegacyApiController@remove_port_group')->name('remove_port_group');
         Route::post('devices/{id}/parents', 'LegacyApiController@add_parents_to_host')->name('add_parents_to_host');
         Route::delete('/devices/{id}/parents', 'LegacyApiController@del_parents_from_host')->name('del_parents_from_host');
         Route::post('locations', 'LegacyApiController@add_location')->name('add_location');