Otto Vincent Lange (30 November 1797 – 4 November 1870) was a Norwegian politician. Lange was born in Jevnaker, but moved to Arendal. He worked as a school teacher, and helped found the local library and museum in 1832. In 1833 he was elected to the Norwegian Parliament for the first time. He then changed his civil job to that of surveyor of customs and excise. He was elected to the Norwegian Parliament in 1836, 1839, 1842, 1845, 1848, 1851 and 1854, representing the constituency of Arendal og Grimstad. He died in 1870 in Kristiania and was buried at Vår Frelsers gravlund.