Syed Rayhān ad-Dīn (Bengali: সৈয়দ রায়হান উদ্দিন, Persian: سید ریحان الدین) was a medieval Sufi author of Bengal.
[2] Syed Rayhan ad-Din was born in the village of Poil of Taraf.
Taraf was a renowned centre of Islamic education in the subcontinent during the medieval period.
[3] Rayhan wrote in the Persian language,[4] and among his prominent works is Khawābnāma (خوابنامه).
[5] He also wrote his own version of the Masnavī-e-Gul-e-Bakāwalī (مثنوى گل بکاولی).