Robert Ashton may refer to:
Robert de Ashton (died 1385), military commander under Edward III of England Robert Ashton (historian) (1924–2013), British historian Robert Ashton (photographer) (born 1950), Australian photographer and photojournalist Robert C. Ashton (c. 1964–2017), American cardiac and thoracic surgeon Robert Ashton, character in The Gentleman from Nowhere Rob Ashton (born 1976), Canadian trade unionist
See also Robert Aston (born 1978), American rapper, known as Skinhead Rob