Ivan IX Frankopan Cetinski (English: John IX Frankopan of Cetin), a member of Cetin branch of the Frankopan noble family and a grandson of Ivan VI (Anž) Frankopan, the knez (prince) of Cetin, was a Croatian nobleman. He died on September 9, 1493, in Battle of Krbava field. His son Ivan X Franjo Frankopan became archbishop of Kalocsa.