Luke Gross (born November 21, 1969 in Decatur, Indiana) is an American rugby union footballer. A lock who has played for various club sides, he earned 62 caps for the USA between 1996 and 2003. Gross was the all-time caps leader for the USA, until Mike MacDonald broke his record in 2011.Gross played basketball for the Marshall University Thundering Herd for two seasons (1991–92 and 1992–93).