Larry Allan Simpson (born August 26, 1977) is a former baseball pitcher.

Simpson made his Major League debut on May 17, 2004.

He played for the Colorado Rockies in 2004 and 2005, Cincinnati Reds in 2005, and Milwaukee Brewers in 2006.

On July 7, 2008, Simpson signed a minor league contract with the Philadelphia Phillies.

This biographical article relating to an American baseball pitcher born in the 1970s is a stub.