North American NA-40

NA-40
Role	Attack bomber Type of aircraft
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.