Robert Allen can refer to several people:

• Robert Allen (Tennessee) (1778-1844), U.S. Congressman from Tennessee
• Robert Allen (Virginia) (1794-1859), U.S. Congressman from Virginia
• Robert (Tex) Allen (1906-1998), American film actor
• Robert Allen (musicwriter) (1928-2000), U. S. songwriter
• Robert Eugene Allen (born 1935), a U.S. telecommunications businessman
• Robert Allen (lexicographer), British lexicographer and author
• Robert Allen (boxer) (born c. 1970), American professional boxer
• Bobby Allen, an American ice-hockey player

See also:

• Robert Allen Monkhouse, (1928-2003), birthname of British entertainer Bob Monkhouse
• Robert Allen Zimmerman, (born 1941), birthname of American singer/composer Bob Dylan