Stepan Valerianovich Balmashov, (Russian: ?????? ???????????? ????????) (April 15, 1882-May 21, 1902) was the Russian student who assassinated the Minister of Internal Affairs Dmitry Sipyagin in April 1902 in the Mariinsky Palace in St.
Petersburg.
He was hanged in the fortress of Schlisselburg in May 1902, aged 21.