Paduka Sri Sultan Alauddin Riayat Shah ibni al-Marhum Sultan Abdul Ghafur Muhiuddin Shah is the 13th Sultan of Pahang who reigned from 1614 to 1615. He seized the throne after killing his father, Abdul Ghafur Muhiuddin Shah and elder brother, the heir apparent Raja Abdullah. His name is identified based on the recent discovery of a treaty with his seal attached, in the Portuguese National Archives in Lisbon. It was recorded that he entered into treaty relations with the Portuguese Malacca on 16 August 1614. Until then, his name had been unknown to historians. The seal is now the earliest known extant seal from the Malay peninsular.