Alauddin Mahmud Syah II
| Alauddin Mahmud Syah II | |
|---|---|
| Sultan of Aceh Sultanate | |
| 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.