Graham Clinton Koonce (born May 15, 1975) is a former Major League Baseball first baseman.

In 2007, he played for the Kansas City Royals' Triple-A club, the Omaha Royals.

He was selected by the Detroit Tigers in 60th Round of 1993 amateur entry draft.

Koonce played his first professional season with their Rookie league Bristol Tigers in 1994.

This biographical article relating to an American baseball first baseman is a stub.