William, Willie, Willy, or Bill Peters may refer to:
Arts and entertainment William Peters (painter) (1742–1814), British painter William Theodore Peters (1862–1904), American poet and actor William Wesley Peters (1912–1991), American architect Willy Peters (1915–1976), Swedish actor and director William Peters (journalist) (1921–2007), American journalist and documentary filmmaker William Peter McGivern (a.k.a. Bill Peters, 1918–1982), American novelist and television scriptwriter
Law and politics William Peters (lawyer) (1702–1786), American lawyer and judge in colonial Philadelphia William Thompson Peters (1805–1885), American politician from Connecticut William H. Peters (1825–?), American politician in Wisconsin William Peters (Australian politician) (1903–1978), member of the New South Wales Legislative Council William Peters (diplomat) (1923–2014), British diplomat and founder of Jubilee 2000 William Peters (mayor) (fl. 1963–1965), South African politician; mayor of Cape Town
Sports W. S. Peters (William Stitt Peters, 1867–1933), American baseball player Bill Peters (footballer) (1898–1957), Australian footballer William Peters (sport shooter) (William Pietersz, 1925–1992), Colombian Olympic shooter Bill Peters (ice hockey) (born 1965), Canadian ice hockey player and coach Willie Peters (born 1979), Australian rugby league player and coach
Others William John Peters (1863–1942), American explorer and scientist William L. Peters (1939–2000), American entomologist