Bob, Bobby, Rob, Robbie or Robert Ellis may refer to:
Robert Ellis (academic) (born 1956), principal of Regent's Park College, Oxford
Robert Ellis (scholar) (1820–1885), English classical scholar
Robert Leslie Ellis (1817–1859), English mathematician and polymath
Robert Ellis (artist) (born 1929), New Zealand artist and art professor
Robert Ellis (actor, born 1892) (1892–1974), American film actor, screenwriter and film director
Robert Ellis (actor, born 1933) (1933–1973), American child actor in the 1940s and 1950s
Bobby Ellis (born 1932), Jamaican trumpet player
Rob Ellis (DJ), English radio DJ
Rob Ellis (producer) (born 1962), English drummer, producer and arranger
Rob Ellis, bass player for the American rock band Seven Wiser
Robert Ellis (guitarist), country music singer-songwriter
Robert Ellis (musician), bass trombone player in the folk band La Bottine Souriante
Robert Ellis (fl.1406), Member of Parliament (MP) for Great Yarmouth in 1406
Robert Ellis (fl.1414-1422), MP for Great Yarmouth, son of earlier MP
Sir Robert Ellis, 1st Baronet (1874–1956), British Conservative MP 1922–1923, 1924–1929, 1931–1945
Rob Ellis (baseball) (born 1950), major league baseball outfielder in the 1970s
Robert Ellis (baseball) (born 1970), major league baseball pitcher in the 1990s
Robert Ellis (cricketer) (1853–1937), English cricketer
Rob Elowitch (born 1943), American professional wrestler known by the ring name Robbie Ellis
Bob Ellis (1942–2016), Australian journalist
Robert Ellis (author) (born 1954), American crime fiction writer
Robert Ellis (24 character), fictional character in the television series 24
Robert Ellis (clergyman) (1898–1966), minister with the Presbyterian Church of Wales
Robert M. Ellis (1922–2014), American artist, educator, and museum director
Robert Stanton Ellis (1825–1877), British civil servant of the Indian civil service
Robert Ellis (Cynddelw) (1812–1875), minister and poet
