Countess Ana Katarina Zrinska (c. 1625–1673) was a Croatian noblewoman and poet, born into the House of Frankopan, Croatian noble family. She married Count Petar Zrinski of the House of Zrinski in 1641 and later became known as Katarina Zrinska. She is remembered in Croatia as a patron of the arts, a writer and patriot. She died in obscurity in a monastery in Graz following the downfall of the Zrinski-Frankopan conspiracy in 1671 and the execution of both her husband Petar Zrinski and her brother Fran Krsto Frankopan. Her most notable literary work is Putni tovaruš, written 1660 at her estates in Ozalj.