Robert, Bob, Bobby, Rob or Robbie Ellis may refer to:
Academics Robert Ellis (theologian) (born 1956), principal of Regent's Park College, Oxford Robert Ellis (classicist) (1820–1885), English classical scholar Robert Leslie Ellis (1817–1859), English mathematician and polymath Robert Ellis (mathematician) (1926–2013), American mathematician Robert Ellis (artist) (1929–2021), New Zealand artist and art professor Robert Ellis (physicist) (1927–1989), American physicist Robert Evan Ellis, professor of Latin American studies
Actors 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
Musicians Bobby Ellis (1932–2016), Jamaican trumpet player Rob Ellis (producer) (born 1962), English drummer, producer and arranger Rob Ellis, bass player for the American rock band Seven Wiser Robert Ellis (singer-songwriter) (born 1988), alt country music singer-songwriter Robert Ellis (musician), bass trombone player in the folk band La Bottine Souriante
Politicians 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 Geoffrey Ellis, 1st Baronet (1874–1956), (Robert Geoffrey Ellis), British Conservative MP 1922–1923, 1924–1929, 1931–1945
Sportsmen 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 Bob Ellis (cricketer) (born 1940), Scottish cricketer Robbie Ellis (1943–2025), American professional wrestler
Writers Bob Ellis (1942–2016), Australian journalist Robert Ellis (author) (born 1954), American crime fiction writer
Other 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 Robert Kevin Ellis (1954–2014), British businessman murdered in Bali Robert Ellis (animator), animator on series VeggieTales.
See also Rob Elles (born 1951), British molecular geneticist