Robert Mortimer may refer to:
Robert Mortimer (bishop) (1902–1976), Anglican bishop Robert K. Mortimer (1927–2007), American molecular biologist Bob Mortimer (born 1959, Robert Renwick Mortimer), English comedian and television presenter Bob Mortimer (footballer) (1908–1965, Robert Mortimer), English footballer
See also Bob Mortimer (evangelist) (born 1954), Christian evangelist