Robert Baker may refer to:

• Robert Baker (1921-2005), humanistic psychologist
• Bobby Baker (born 1928), political associate of Lyndon B. Johnson
• Robert Baker (actor) (born 1979), appeared in film Out of Time (2003)
• Robert Baker (artist), early 20th-century sculptor; brother of sculptor Bryant Baker
• Robert Baker (Case), founding partner of J I Case company, 1863
• Robert Baker (CFL football) (born 1976), player with the Toronto Argonauts
• Robert Baker (cricket), player for Yorkshire County Cricket Club
• Robert Baker (music), clarinetist, husband of composer Ruth Gibbs
• Robert Baker (New York politician), U.S. Representative from New York, 1903–1905
• Robert C. Baker, inventor of the chicken nugget, professor at Cornell University

Lists of ambiguous human names