The Sammā dynasty (Sindhi: سمن جو گهراڻو‎, romanized: Samman Jō Gharāṇō) was a medieval Sindhi dynasty which ruled the Sindh Sultanate from 1351 before being replaced by the Arghun dynasty in 1524.

The Samma dynasty has left its mark in Sindh with structures including the necropolis of and royalties in Thatta.