Andrew Rock (born January 23, 1982) is an American sprinter who specializes in the 400 meter dash.

After finishing runner-up seven times between the 2001 and 2002 seasons, Rock hit his stride in 2003 and 2004, winning eight consecutive titles in the 400 m dash and 4 × 400 m relay.

In addition to these achievements, Rock also claimed the fastest 400 m time in Division III history, running a 44.66 at a USATF meet in Carson, California, thereby announcing his arrival onto the elite track scene.

Rock turned professional soon after graduating from UW–La Crosse with a finance degree by signing a multi-year contract with Adidas.

In the 2005 World Championships in Helsinki, he competed in 400m and won a silver medal, setting a new personal best of 44.35.