Robert Clarke (1920-2005) was an American actor best known for his cult classic science fiction films of the 1950s.

Robert Clarke may also refer to:

• Bob Clarke (illustrator) (born 1926), American illustrator, best known for his work with MAD magazine
• Bob Clarke (historian) (born 1964), English archaeologist and historian
• Bob Carlos Clarke (1950-2006), Irish photographer
• Bobbie Clarke (born Robert William Woodman, born 1941), English rock drummer
• Bobby Clarke (born 1949), retired Canadian hockey player
• Rob Clarke (born 1967), Canadian politician and Royal Canadian Mounted Police officer
• Robbie Clarke (born 1983), Irish footballer

[ Source: Wikipedia ]