Karol Hubert Rostworowski (3 November 1877 – 4 February 1938) was a Polish playwright, poet and musician, born to a family of local gentry.

He became famous locally for his play Judasz z Kariothu (Judas of Kerioth, 1913),[4] based on the New Testament and staged with the actor Ludwik Solski in the title role.

In 1920 he published Miłosierdzie (Mercy), and in 1922 the drama Straszne dzieci (Hollow Children), followed by Zmartwychwstanie (Resurrection, 1923) and Antychryst (1925), but these were not as highly regarded as his first plays.

He spoke out against totalitarianism in Czerwony marsz (Red March, 1930), a morality play on guillotines and rolling heads based on the French Revolution and the Terror.

[6] Rostworowski received rave reviews for his tragedy Niespodzianka (Surprise, 1928–1929), about parents murdering for money their own son, who had emigrated to America and returned to visit them.