Robert Whitaker or Whittaker may refer to:
Robert Whittaker (fighter) (born 1990), Australian mixed martial artist Robert Whitaker (equestrian) (born 1983), British showjumper Robert Whitaker (author) (active since 1989), American author Robert Whitaker (surgeon) (active since 1973), British author, surgeon and anatomist Robert Whitaker (photographer) (1939–2011), British photographer Robert Whittaker (cricketer) (1908–1990), English cricketer Robert Whittaker (American football) (1904–1990), American football player and coach Robert Whittaker (ecologist) (1920–1980), American vegetation ecologist Robert Whittaker (British Army officer) (1894–1967), British Army major Robert Whitaker (minister) (1863–1944), Baptist minister and political activist Robert H. Whittaker (politician), American member of the Virginia House of Delegates
See also Bob Whittaker (born 1939), U.S. representative from Kansas