The Cox-Klemin TW-2 was a 1920s American biplane training aircraft built by the Cox-Klemin Aircraft Corporation. It was powered by a water-cooled Hispano-Suiza 8 V8 aero-engine.
The CK-2 was a biplane with single-bay biplane that utilized a Fokker scheme of N-shaped interplane struts and metal cabane. Three aircraft were built, two flight articles that were used to test different engines and one static test article. However, the TW-2 was not ordered into production.