William Moss or Bill Moss may refer to:

• William Moss (Australian politician) (1891–1971)
• W. Stanley Moss or Ivan William Stanley Moss (1921–1965), British WWII army officer, writer and broadcaster
• Bill Moss (musician) (1930–2007), American gospel music singer
• Bill Moss (racing driver) (1933–2010), British former racing driver
• Bill Moss Jr. (born 1971), American gospel singer-songwriter, composer, arranger and producer
• Bill Moss (tennis) (fl. 1940s), British tennis player and four-time winner of the British Pro Championships