North American NA-40

NA-40
Role Attack bomber
National origin United States
Manufacturer North American Aviation
First flight January 1939
Primary user United States Army Air Corps
Number built 1
Developed from North American XB-21
Developed into North American B-25 Mitchell

The North American NA-40 was an American prototype bomber aircraft developed by North American Aviation in the late 1930s for evaluation by the United States Army Air Corps. Although unsuccessful, it led directly to the North American B-25 Mitchell medium bomber.