Rolf Eilert Gerhardsen (3 February 1902 – 21 November 1971) was a Norwegian journalist and influential cold warrior. He was born in Kristiania as a son of Gerhard Olsen (1867–1949) and Emma Hansen (1872–1949). He was a brother of Einar Gerhardsen, and through him an uncle of Rune Gerhardsen and granduncle of Mina Gerhardsen.