Association football •
Derek Williams (footballer, born 1922) (1922–2019), English footballer for Chester City •
Derek Williams (footballer, born 1934) (1934–2014), Welsh footballer •
Derek Williams (footballer, born 1937) (1937–2015), English footballer for Grimsby Town
Other sports •
Derek Williams (boxer) (born 1965), English heavyweight boxer of the 1980s and 1990s •
Derek Williams (sportsman) (1924–2014), former Welsh international rugby union player and first-class cricketer ==The arts==