Jan Kubisz (24 January 1848 – 25 March 1929) was a Polish educator and poet from the region of Cieszyn Silesia.
His poem Plyniesz Olzo po dolinie (You Flow, Olza, Down the Valley), centered on the Olza River, became unofficial anthem of Cieszyn Silesia, especially Poles in Zaolzie.
Author: Scan from his 1928 book, author unknown. Source: Kubisz, Jan (1928). Pamietnik starego nauczyciela. Cieszyn: Wydawnictwo Towarzystwa Ewangelickiego w Cieszynie. License: CC-PD-Mark PD Old