| Alauddin Mahmud Syah II | |
|---|---|
| Sultan of Aceh | |
| Reign | 1870–1874 |
| Predecessor | Alauddin Ibrahim Mansur Syah |
| Successor | Alauddin Muhammad Da'ud Syah II |
| Died | 28 January 1874 |
| Father | Alauddin Sulaiman Ali Iskandar Syah |
| Religion | Islam |
Sultan Alauddin Mahmud Syah II (died 28 January 1874) was the thirty-fourth sultan of Aceh in northern Sumatra. He reigned from 1870 to 1874 and was the last sultan to rule Aceh before the colonial invasion.