The Cox-Klemin XA-1 was a 1920s American air ambulance biplane designed and built by the Cox-Klemin Aircraft Corporation for the United States Army Air Service, only two prototypes were built.

[1] The XA-1 was designed as an ambulance aircraft to replace modified de Havilland DH.4 aircraft with the United States Army Air Service.

[1] The XA-1 was a biplane powered by a 420 hp (313 kW) Liberty 12A engine with a fixed conventional landing gear, it had a crew of two and room for two stretchers.

[1] Two prototype aircraft designated XA-1 (A-1 was the first allocation in the army air services ambulance designation system) were flown but no further aircraft were built.

[1] The aircraft gained fame for flying injured individuals to hospitals in the aftermath of the 1927 tornado that destroyed Rocksprings, Texas.