| Oskar Zawisza | |
| Birth Date: | 23 November 1878 |
| Birth Place: | Jablunkov, Austrian Silesia |
| Death Place: | Těrlicko, Czechoslovakia |
| Citizenship: | Austrian, Czechoslovak |
| Occupation: | Catholic priest, publicist |
Oskar Zawisza (23 November 1878 – 18 January 1933) was a Polish Catholic priest, composer and educational activist.
Zawisza was born on 23 November 1878 in Jablunkov. He was son of a teacher from Jablunkov. Zawisza finished German gymnasium in Bielsko and Theological faculty in Olomouc. He was a pupil of Czech composer Josef Nešvera. Zawisza was ordained as a priest on 23 July 1902. Then he became curate in Petrovice u Karviné, Dolní Bludovice, Niemiecka Lutynia, Strumień and Cieszyn. On 1 July 1911 he became a rector in Těrlicko.
He collaborated with Gwiazdka Cieszyńska and Zaranie Śląskie magazines. Zawisza conducted historical and ethnographic research and wrote also several books: Dzieje Strumienia (History of Strumień), Dzieje Karwiny (History of Karviná) and Śpiewnik góralski (Goral's songbook); and operas Dożynki, Święta Barbara and Czarne diamenty, symphonic poem Znad brzegów Olzy and symphony Z niwy śląskiej.
Zawisza died on 18 January 1933 in Těrlicko, at the age of 54.