Sultan Sharif Ali (also known as Barkat Ali ibnu Sharif Ajlan ibni Sharif Rumaithah) was the third sultan of Brunei. He was made Sultan after Sultan Ahmad died without leaving any male descendants, and as such, at the request of the people of Brunei themselves, he became eligible for the throne after marrying Sultan Ahmad's daughter, Puteri Ratna Kesuma.

Sharif Ali was a very pious ruler and was therefore nicknamed "Sultan Berkat" (Blessed Sultan). He was the first sultan to build a mosque, and fortified the defence of Brunei by ordering his people to build a stone fortress. Sharif Ali governed Brunei according to Islamic principles and his reign was popular and highly respected. After his death, Sharif Ali was succeeded by his son Sulaiman.

The royal symbol origin came from the world's largest seed called "Coco de mer". Sultan Sharif Ali was the direct-descendant of Muhammad. His grandchild was Saidina Hassan r.a. Sultan Sharif Ali was the ancestor of the Brunei and Sulu royal families.