Rolf Jacobsen (30 November 1865 – 22 February 1942) was a Norwegian jurist and politician for the Liberal Party.

He was a mayor of Narvik Municipality, two-term member of the Parliament of Norway as well as Minister of Defence from 1924 to 1926.

He was born in Fredrikstad as the son of military officer and politician Albert Marius Jacobsen (1838–1909) and his wife Hansine Fredrikke Schøyen (1838–1915).

From 1885 to 1890, Jacobsen was an attorney in Nordre Gudbrandsdalen, working under district stipendiary magistrate Walter Scott Dahl.

Jacobsen served as acting district stipendiary magistrate for a total of three years, while Dahl was a member of Parliament.