Sultan ʽAbdul ʽAziz al-Muʽtasim Billah Shah ibni Almarhum Raja Muda Musa KCMG KBE (Jawi: سلطان عبد العزيز المعتصم بالله شاه ابن المرحوم راج مودا موسى; 14 November 1887 – 26 March 1948) was the 31st Sultan of Perak, a state in the British-administered Federated Malay States.

Raja Abdul Aziz was born on 14 November 1887 at Kampung Bandar, Teluk Anson, Perak.

He was the son of Raja Muda Musa ibni Almarhum Sultan Ja’afar Safiuddin Mu’azzam Shah Waliullah.

[citation needed] He became the Raja Muda of Perak in 1919 during the reign of his brother-in-law, Sultan Iskandar Shah Ibni Almarhum.

Almarhum was interred at the Al-Ghufran Royal Mausoleum in Bukit Chandan and the posthumous title Marhum Nikmatullah was conferred upon him and was 60 years old when he died.