Sergei Syrtsov
 Sergei Ivanovich Syrtsov (Russian: Серге́й Ива́нович Сырцо́в; Moscow Russian Empire 17 July [O.S. 5 July] 1893 Slavgorod Yekaterinoslav Governorate – Moscow 10 September 1937 Moscow) was a Soviet-Russian politician. He was of Russian ethnicity and joined the Bolshevik Party in 1913.