Luke Gross (born November 21, 1969) is an American former rugby union player and current rugby coach and administrator.
A lock who played for various club sides, he earned 62 caps for the United States between 1996 and 2003.
Gross was the all-time caps leader for the United States, until Mike MacDonald broke his record in 2011.Since retiring as a player, Gross has served as a rugby administrator and coach.
He was the head coach of PRO Rugby team Sacramento Express in 2016.