Clay William Timpner (born May 13, 1983) is a former Major League Baseball outfielder with the San Francisco Giants.

A native of Lakeland, Florida, Timpner attended LaBelle High School, where he hit .448 with 75 stolen bases and also a 2.39 ERA during his tenure there.

He was selected by the Texas Rangers in the 41st round of the 2001 MLB Draft, but opted to play college baseball at the University of Central Florida.

In 126 games with the San Jose Giants, he hit 22 doubles, 12 triples and four home runs en route to a .291 batting average.

Timpner made his major league debut on that same day against the San Diego Padres, appearing in the game as a pinch hitter and striking out.