Leif Olson (born July 17, 1981) is an American professional golfer who played on the PGA Tour.

Olson earned his 2009 PGA Tour card through 2008 Q-School.

Olson won a BMW Z4 Roadster at the 2009 RBC Canadian Open when he recorded a hole in one on the 15th hole at Glen Abbey Golf Course.

Olson's ball landed past the hole, rolled down the slope towards the hole and deflected off another player's ball which redirected it into the cup.

Olson finished a career-best third place at the Turning Stone Resort Championship in 2009, just one stroke out of a playoff that was won by Matt Kuchar.