Dain Elmer Clay (July 10, 1919 – August 28, 1994) was an American Major League Baseball outfielder.

He played for the Cincinnati Reds of the National League.

Clay played collegiately at Kent State University in 1943.

In 1945, Clay led the National League in at-bats with 656, and was sixth in games played, with 153.

This biographical article relating to an American baseball outfielder born in the 1910s is a stub.