Robert Milligan may refer to:
Bob Milligan (born 1932), United States Marine Corps general, former Florida Comptroller Robert Milligan (merchant) (1746–1809), Scottish slaver and merchant Robert Milligan (politician) (1786–1862), British Liberal MP Robert Milligan (footballer) (1892–1915), Scottish footballer Robert Milligan (rower) (born 1952), British rower
See also Robert Milligan McLane (1815–1898), American politician and diplomat Rob Milligan (disambiguation)