Saʿd ibn Abī Waqqās (), also known as Saʿd ibn Malik, was one of the companions of the Islamic prophet. Saʿd was reportedly the seventh person to embrace Islam, which he did at the age of seventeen. He is mainly known for his commandership in the Battle of al-Qadisiyyah and in the conquest of Persia in 636, his governorship over Persia, and his diplomatic sojourns to China in 651.