Sultan Abdullah Muhammad Shah I ibni Almarhum Raja Bendahara Abdul Rahman Shah I (Jawi: سلطان عبد الله محمد شاه ١ ابن المرحوم راج کچيل بسر عبد الرحمن) was the 22nd Sultan of Perak reigning from 1851 to 1857.
During his reign, he was involved in a civil war with Raja Muda Ngah Jaafar, who escaped Sultan Abdullah I his palace in Durian Sebatang and sought refuge in the residences of Datuk Laksamana Tok Janggut's residence.
Raja Lop Yusuf, the eldest son of Sultan Abdullah I, tried to persuade the Malay leaders to continue their support to his father but failed.
Sultan Abdullah I wrote to Blundell about the crisis in Perak on 23 November 1855, and also to seek help from the British.
However, the request was rejected on the grounds that the British had promised not to intervene in Perak's internal affairs.