The Caudron C.161 was a lightweight French two-seat biplane designed by Caudron for sport or flight training use. A conventional biplane with a square fuselage powered by a Salmson radial engine. It had two cockpits in tandem with dual controls in both, when not used as a trainer the controls could be removed from the rear cockpit. A variant, the C.168, with a more powerful Anzani radial engine was also available.