Ludwik Tadeusz Waryński (24 September 1856 at Martynówka – 2 March 1889 in Shlisselburg)[1] was an activist and theoretician of the socialist movement in Poland.

[2] Waryński was born at Martynówka, Kiev Governorate (Мартинівка in present-day Kaniv Raion, Cherkasy Oblast, Ukraine), the son of a January Uprising insurrectionist.

During his stay in Switzerland, he also met his future wife Anna Sieroszewska (sister of Wacław Sieroszewski), with whom he had a son, Tadeusz.

In 1883 he was arrested by the Tsarist secret police and, after a trial with 29 co-defendants in 1885, sentenced to 16 years in prison in Shlisselburg.

Countless Polish schoolchildren memorized Elegia o śmierci Ludwika Waryńskiego, the powerful poem of Waryński's death by Władysław Broniewski.