Elmer R. Gainer (November 22, 1918 – September 29, 1970[1]) was an American professional basketball player.

Gainer played college basketball at DePaul University, and was drafted in the 1947 BAA draft by the Baltimore Bullets.

He played for the Bullets and Waterloo Hawks in the National Basketball Association (NBA).

[2] He had previously played in the National Basketball League with several teams.

This biographical article relating to a United States basketball player, coach, or other figure born in the 1910s is a stub.