Luke Gross 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.

The United States men's national rugby union team, nicknamed the Eagles, represents the United States of America Rugby Football Union in men's international rugby union. USA Rugby is the national governing body for the sport of rugby union in the United States, and is a member of Rugby Americas North, one of six regional governing bodies under World Rugby. Until rugby returned to Olympic competition, with sevens at the 2016 Rio Games, the United States was the reigning Olympic rugby champion, having defeated the one other competitor in 1920 and the two other competitors at the 1924 Summer Olympics.