| Ahmad Tajuddin Shah | |
| Sultan of Perak | |
| Succession: | Sultan of Perak |
| Reign: | 1577–1584 |
| Predecessor: | Mansur Shah I |
| Successor: | Tajul Ariffin |
| Death Date: | 1584 |
| Death Place: | Jalong |
| Burial Place: | Geronggong, Pulau Tiga, Lower Perak District |
| Issue: | Raja Kecil Lasa Raja Inu |
| Full Name: | Paduka Sri Sultan Ahmad Tajuddin Shah ibni Almarhum Sultan Mansur Shah I |
| Posthumous Name: | Marhum Muda |
| House: | Perak |
| Father: | Mansur Shah I |
| Religion: | Sunni Islam |
Paduka Sri Sultan Ahmad Tajuddin Shah ibni Almarhum Sultan Mansur Shah I (died 1584) was the third Sultan of Perak. He was the son of the second Sultan of Perak, Mansur Shah I.[1]
After the news of the death of his father, Sultan Mansur Shah I, the people of Perak went to the Aceh Sultanate and went to see the Sultan. The Sultan of Aceh was Ahmad Tajuddin's older brother and eldest son of Mansur Shah I, Alauddin Mansur Shah. The people of Perak asked for a prince to be made sultan in Perak. Sultan Alauddin Mansur Shah agreed and sent his younger brother Raja Ahmad to be made sultan in Perak who then used the title Sultan Ahmad Tajuddin Shah.[2]
At that time, Perak was still under the control of Aceh, after gaining the throne of the Perak Sultanate, Sultan Ahmad Tajuddin Shah began to reside in a place called Jalong. However, because the area was often flooded, he moved and resided in a new location called Geronggong, which is located in Pulau Tiga subdistrict.[1] [2]
Sultan Ahmad Tajuddin Shah ruled Perak for seven years and died in 1584 in Jalong and was given the title Marhum Muda.[1] [3] Sultan Ahmad Tajuddin Shah's son Raja Inu was titled Raja Kecil Lasa.[2]
His mother and his relatives who were taken to Aceh left to return to Perak. Since then, the power of the Aceh Sultanate over Perak began wane.[2]
The tomb of Sultan Ahmad Tajuddin Shah is located in Kampung Jawa which is close to Kampung Gajah. Near the mausoleum of Sultan Ahmad Tajuddin Shah there is also the mausoleum of the 11th Sultan of Perak and the mausoleum of the 12th Sultan of Perak.[2]