Ivan Frankopan Cetinski

Ivan IX Frankopan Cetinski (John IX Frankopan of Cetin) was a Croatian nobleman. A member of Cetin branch of the Frankopan noble family and a grandson of Ivan VI (Anž) Frankopan, Cetinski was the knez (prince) of Cetin Castle.

Cetinski is most notable for being one od the commanders of Croatian forces in the Battle of Krbava field, where he died in battle. His son, Franjo Frankopan, became archbishop of Kalocsa.