The 1940 USA Outdoor Track and Field Championships were organized by the Amateur Athletic Union (AAU) and served as the national championships in outdoor track and field for the United States.

The men's edition was held at Ratcliffe Stadium in Fresno, California, and it took place 28–29 June.

The women's meet was held separately at Carey Stadium in Ocean City, New Jersey, on 7 July.

At the men's championships, Dutch Warmerdam set a world record in the pole vault, becoming the second person in history to jump over 15 feet (4.6 m).

[1] The women's competition was marked by the debut of Jean Lane, who won the 50 m and 100 m.[2]