| Conventional Long Name: | Layzanshah |
| Common Name: | Layzanshah |
| Capital: | Lahij (possibly) |
| Religion: | Sunni Islam |
| Government Type: | Governorship, later monarchy |
| Year End: | 956 |
| Year Start: | 861 |
| Image Map Caption: | Valley of Girdiman where Layzan was located |
| Common Languages: | Persian (court, literature, dynastic) Arabic (initially dynastic) |
| Year Leader1: | 861–? |
| Leader1: | Yazid ibn Khalid (first) |
| Year Leader2: | 948 – 956 |
| Leader2: | Ahmad (last) |
| P1: | Abbasid Caliphate |
| S1: | Shirvanshah |
| Era: | Middle Ages |
Layzānshah or Shah of Layzān was a historical title given to the lords of Layzan. According to Vladimir Minorsky, the title was first granted to local rulers by their Sassanid Persian overlords, medieval authors specifically mentioning Anushirvan.
Layzān was a principality formed around modern Lahıc, Azerbaijan and covered valley of Girdimanchay, whose population might be migrants from Lahijan in Gilan. Ibn Hawqal mentioned Layzān as part of Arran, while Al-Masudi in chapter 17 of his The Meadows of Gold placed it in periphery of Shirvan.
After Anarchy at Samarra, the title was acquired by Haytham ibn Khalid's brother Yazid ibn Khalid and passed on to his children. The latter's grandson Abu Tahir Yazid attacked his cousin Ali I and killed all of his family save for his grandson, thus holding both titles of Layzanshah and Shirvanshah together. Later Layzan was granted as a fief to sons of Shirvanshahs.
Known holders of the title include:
Layzān became a traditional title by 10th century and fell into disuse.