Stephen (I) Lackfi | |
|---|---|
| Lord of Simontornya | |
 Seal of Stephen I Lackfi, 1348 | |
| Voivode of Transylvania | |
| Reign | 1344–1350 |
| Predecessor | Nicholas Sirokai |
| Successor | Thomas Gönyűi |
| Born | c. 1305 |
| Died | 1353 |
| Noble family | House of Lackfi |
| Spouse(s) | 1, unidentified (died 1343) 2, Agnes Puchaim (since 1346) |
| Issue | (1) Denis II (1) Nicholas II (1) Emeric II (1) Stephen II (2) Ladislaus II (2) Catherine |
| Father | Lack Hermán |
Stephen (I) Lackfi (Hungarian: Lackfi (I.) István, Croatian: Stjepan I. Lacković; c. 1305 – 1353) was an influential Hungarian nobleman and a successful military leader in the Kingdom of Hungary. He played a significant role in the Neapolitan campaigns of Louis the Great.