The Loening C-2 Air Yacht was an amphibious airliner produced in the United States at the end of the 1920s, developed from the OL observation aircraft the firm was producing for the US military.

The Loening OL, also known as the Loening Amphibian, was an American two-seat amphibious biplane designed by Grover Loening and built by Loening for the United States Army Air Corps and the United States Navy.