Baylis is a surname. Notable people with the surname include:
Jearld Baylis, a star defensive lineman in the Canadian Football League
Julie Baylis, wife of The Honourable Jeremy Lascelles
Keith Baylis (born 1947), English former cricketer
Lilian Baylis (1874–1937), British theatrical producer, manager and founder of a ballet company
Nick Baylis FRSA (based in Cambridge, England) loosely describes himself as a well-being explorer
Trevor Baylis (born 1937), English inventor of the windup radio
