Association football •
Harry Williams (footballer, born 1875) (1875–?), English footballer with Small Heath •
Harry Williams (footballer, born 1883) (1883–?), English footballer with Bolton Wanderers, Burnley and Manchester United •
Harry Williams (footballer, born 1898) (1898–1980), English footballer with Sunderland, Chesterfield, Manchester United and Brentford •
Harry Williams (footballer, born 1929), English footballer •
Harry Williams (soccer, born 1951) (born 1951), Australian soccer player at the 1974 FIFA World Cup •
Harry Williams (footballer, born 1996), English footballer with Gloucester City •
Harry Williams (footballer, born 2002), English footballer with Walsall
Baseball •
Harry Williams (first baseman) (1890–1963), American baseball player for the New York Yankees c. 1913 •
Harry Williams (third baseman), American Negro leagues baseball player •
Harry Williams (infielder) (1905–1964), American Negro leagues baseball player
Other sports •
Harry Williams (American football) (born 1982), American football wide receiver •
Harry Williams (cricketer) (1892–1967), English cricketer •
Harry Williams (golfer) (1915–1961), Australian golfer •
Harry Williams (rugby union) (born 1991), English rugby player with Exeter Chiefs ==Other==