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

The men's edition was held at Madison Square Garden in New York City, New York, and it took place February 24.

There was no corresponding women's championships in 1940.

[1][2] At the championships, the University of Notre Dame's Greg Rice ran a world record time of 13:55.9 for 3 miles indoors.

He ran the race minutes after Taisto Mäki raced in an exhibition at the same venue, and commentators viewed Rice's performance as a response to Finnish distance running dominance of the time.