Sergey Mitrofanovich Gorodetsky (Russian: Серге́й Митрофа́нович Городе́цкий; January 17 [O.S. January 5] 1884–June 8, 1967) was a Russian poet, one of the founders (together with Nikolay Gumilev) of Guild of Poets ("Цех поэтов").
Gorodetsky entered the literary scene as a Symbolist, developing friendships with Blok, Ivanov, and Briusov. Following his brief stint with Symbolists, Gorodetsky began to associate with younger poets, forming the Acmeist group with Gumilev, Akhmatova, and Mandelshtam. Subsequently abandoning yet another group, he welcomed the Bolshevik revolution as a Soviet poet.