William Chadwick may refer to: People William Chadwick (bishop) (1905–1991), bishop of Barking, 1959–1975 William Chadwick (footballer), English footballer for Port Vale 1901–1904 William Chadwick (painter) (1879–1962), British-born American Impressionist painter William Owen Chadwick (1916–2015), British professor, writer and historian of Christianity Bill Chadwick (1915–2009), first U.S.-born referee to serve in the National Hockey League Billy Chadwick (footballer) (born 2000), English footballer
Other USCGC William Chadwick (WPC-1150), a Sentinel class cutter of the United States Coast Guard William Chadwick (USCG), namesake of the above Billy Chadwick, a character in the TV series CSI: Miami, played by Lew Temple
See also William Chadwick Bourchier (1852–1924), dean of Cashel