Sergey Vasilyevich Chesnokov (Russian: Сергей Васильевич Чесноков; 19 October 1820, in Moscow, Imperial Russia – 18 February 1878, in Moscow, Imperial Russia) was a Russian stage actor better known under his stage name, Sergey Shumsky.

A Shchepkin School graduate, Sergey Chesnokov made his stage debut as early as 1830, in the Nikolai Khmelnitsky's vaudeville Actors Among Themselves, playing a character called Shumsky.

The dramatist Fyodor Kokoshkin, who was the Imperial Theatres's Moscow department director at the time, praised the boy's performance and suggested that he should keep this surname to himself, as a stage name.

During his forty years career as a stage actor Shumsky was engaged in more than 500 parts, some of them in Alexander Ostrovsky's plays, including Vikhorev (Stay in Your Own Sled, 1853), Zhadov (A Profitable Position, 1863); Obroshenov (Jokers, 1864); Krutitsky (Enough Stupidity in Every Wise Man, 1868), Dobrotvorsky (The Poor Bride, 1853), Schastlivtsev (The Forest, 1871), Margaritov (The Belated Love, 1873), Groznov (Truth Is Good, But Happiness' Better, 1876).

In the late 1860s Sumsky retired to start teaching drama at the Moscow Conservatory where in 1869 he produced the opera A Life for the Tsar, by Mikhail Glinka.