Syed Shah Nasiruddin (Bengali: শাহ সৈয়দ নাসিরুদ্দীন, Arabic: شاه سيد ناصر الدين) was a Sufi saint and military leader associated with the spread of Islam in Bengal in the 14th century.

[1]After being forced to leave the city in 1258 following its destruction by the Mongols under Hulagu Khan, Syed Nasiruddin first moved to Delhi before settling in Bengal.

[5] Soon after the conquest of Sylhet, word was received of the execution of a local Qadi by Achak Narayan, the ruler of the neighbouring kingdom of Taraf in present-day Habiganj.

[6] Syed Nasiruddin was dispatched with a contingent of soldiers as well as twelve of Shah Jalal's followers against Narayan, who fled with his family upon learning of the advance.

He then attempted to console the family of the late Qadi by giving his own son, Syed Sirajuddin, in marriage to Nuruddin's daughter.