Bayfield is a surname. Notable people with the surname include:
- Henry Wolsey Bayfield (1795–1885), English Royal Navy admiral
- M. A. Bayfield (1852–1922), English classical scholar, educator and Anglican priest
- Martin Bayfield (born 1966), English actor, broadcaster, and rugby union player
- Richard Bayfield (died 1531), English Protestant martyr
- Robert Bayfield, 17th-century English physician
- St. Clair Bayfield (1875–1967), American actor
- Tony Bayfield (born 1946), British Reform rabbi