Reginald R. Gross (born January 1962) is an American convicted murderer and former professional boxer who competed from 1982 to 1988. His most notable wins were a first round knockout of future long-time IBF world Light-Heavyweight champion "Prince" Charles Williams, as well as upsets of undefeated Smokin' Bert Cooper (TKO8) and outstanding amateur and 16-0 pro Jimmy Clark (TKO9). He was most famously stopped in one round by Mike Tyson, in an exciting but brief bout where he took the fight to the feared contender. He also suffered losses to Frank Bruno and Jesse Ferguson.