| Alauddin Ri'ayat Syah Sayyid al-Mukammal | |
|---|---|
 Alauddin Ri'ayat Syah, surrounded by his female guards depicted by Theodor de Bry, 1604 engraving | |
| Sulṭān of Acèh Darussalam | |
| Reign | 28 June 1589–1605 |
| Predecessor | Sultan Buyung |
| Successor | Ali Ri'ayat Syah III |
| Born | Banda Aceh, Aceh Sultanate (now Indonesia) |
| Died | 1605 Banda Aceh, Aceh Sultanate (now Indonesia) |
| Issue | Maharaja Diraja Ali Ri'ayat Syah III Sultan Husain Sultan Abangta Merah Upah Raja Puteri Puteri Raja Inderabangsa |
| House | Darul Kamal |
| Father | Almalik Firman Syah bin Muzaffar Syah |
Sultan Alauddin Ri'ayat Syah Sayyid al-Mukammal (died 1605) was the tenth Sultan of Aceh in northern Sumatra, ruling from 1589 to 1604. His reign is important since it saw the arrival of three new European powers to the region of the Melaka Straits: the Dutch, English and French.