Robert Ayres may refer to:
Robert M. Ayres (1898–1977), American architect Robert Ayres (actor) (1914–1968), American actor Robert Ayres (scientist) (1932–2023), American-born scientist Bob Ayres (rugby league) (1914–1993), British rugby league player Bob Ayres (born 1953), American businessman
See also Robert Ayers (born 1985), American football player