Franklin L. Gilson (October 22, 1846 – June7, 1892) was an American politician and jurist.
Born in Middlefield, Ohio, Gilson studied at Hiram College and Oberlin College. In 1870, he moved to West Bend, Wisconsin and studied law with his uncle Leander F. Frisby. In 1872, Gilson was admitted to the Wisconsin Bar and practiced law in Ellsworth, Wisconsin. Gilson served as district attorney of Pierce County, Wisconsin in 1874 and 1876. In 1881 and 1882, Gilson served in the Wisconsin State Assembly and was a Republican. Gilson served as speaker of the assembly in 1882. In 1883, Gilson moved to Milwaukee, Wisconsin to practice law with his uncle Leander Frisby. In 1890, Gilson was appointed judge of Milwaukee Superior Court serving until his death in Milwaukee, Wisconsin.