Gregory Lamont Vaughn (born July 3, 1965) is an American former baseball left fielder who played for the Milwaukee Brewers (1989–1996), San Diego Padres (1996–1998), Cincinnati Reds (1999), Tampa Bay Devil Rays (2000–2002) and Colorado Rockies (2003) in Major League Baseball (MLB). He was born in Sacramento, California, where he attended Kennedy High School. He then played baseball at the University of Miami. He is the cousin of fellow former major leaguers Mo Vaughn and Jerry Royster.