Tharon Rex Mayes (born September 9, 1968) is a retired professional basketball player.
Born in New Haven, Connecticut, USA, he was listed at 6'3" tall and weighed 175 lbs.
Mayes played collegiate ball with the Florida State University Seminoles (1986–1990).
He played the majority of his professional basketball career in the CBA for the Sioux Falls Skyforce (1990–1992), Grand Rapids Hoops (1993), Fargo-Moorhead Fever (1993–1994) and Yakima Sun Kings (1997).
He participated in the NBA with brief stints with the Philadelphia 76ers (1991) and Los Angeles Clippers (1992), and also played overseas in Belgium for Castors Braine (1992–1993), in the Philippines for Purefoods TJ Hotdogs (1993) and Formula Shell Zoom Masters (1996), in Germany for Röhndofer TV (1995–1996), in Spain for Breogán Lugo (1994–1995), Covirán Sierra Nevada (1997–1998) and Recreativos Orenes Murcia (1998–1999), and in Israel for Hapoel Tsfat (1996–1997) and Hapoel Holon (1999–2000).
After retiring, Mayes settled in Toronto and started a basketball camp.