Gerard Brantsen (10 January 1735 in Arnhem – 21 December 1809 in Arnhem) was a Dutch politician and diplomat. He was one of the Dutch signatories to the treaty ending the Fourth Anglo-Dutch War in 1784. He was also mayor of Arnhem in 1762 and 1765, and several times an alderman of this city. He was a member of the Staatsbewind of the Batavian Republic between 16 October 1801 and 29 April 1805 (president between 1 May 1804 and 31 July 1804).