| Pir Husayn | |
|---|---|
| Emir of Erzincan | |
| Reign | 2–3 July 1362 – late 1379 |
| Predecessor | Ahi Ayna |
| Successor | Mutahharten |
| Died | late 1379 |
| Religion | Islam |
Pir Husayn (died late 1379) was Emir of Erzincan from 1362 until his death. Originally the ruler of Karahisar, he arrived in Erzincan on 8 June 1362 and claimed the throne that was occupied by Ahi Ayna, who died on 2–3 July.