| Frederick II, Count of Celje | |
| Noble Family: | House of Celje |
| Succession: | Ban of Slavonia |
| Reign: | 1445 - 1454 |
| Predecessor: | Matko Talovac |
| Successor: | Ulrich II, Count of Celje |
| Father: | Hermann II, Count of Cilli |
| Mother: | Anna of Schaunberg |
| Spouse: | Elizabeth of Frankapan, Veronika of Desenice |
| Birth Date: | 17 January 1379 |
| Death Place: | Žovnek Castle |
Frederick II (Slovenian: Friderik II. Celjski; Croatian: Fridrik II. Celjski; German: Friedrich II Graf von Cilli) (17 January 1379 – 13 or 20 June 1454) was a Count of Celje and Ban of Croatia, Slavonia and Dalmatia.
Frederick was the son of Hermann II, Count of Celje and his wife Anna of Schaunberg.
Frederick II married Elizabeth of Frankopan and after her death in 1422, Veronika of Desenice.[1] The famous Eberhard Windbeck chronicle gives a detailed report on the circumstances of Elizabeth of Frankopan's death, which in the chronicle is described as murder and placed in the year 1424.[2]