HRH Prince Al-Muhtadee Billah is proclaimed the crown prince of Brunei with a Royal Proclamation.

Al-Muhtadee Billah ibni Hassanal Bolkiah is the eldest son of Sultan Hassanal Bolkiah and his wife Queen Saleha. He is the Crown Prince of Brunei Darussalam, and is first in the line of succession to the Bruneian throne. He is expected to eventually lead the state and government, and is regarded as the second most significant figure in the political hierarchy.

A crown prince or hereditary prince is the heir apparent to the throne in a royal or imperial monarchy. The female form of the title, crown princess, is held by a woman who is heir apparent or is married to the heir apparent.

Brunei, officially Brunei Darussalam, is a country in Southeast Asia, situated on the northern coast of the island of Borneo. Apart from its coastline on the South China Sea, it is completely surrounded by the Malaysian state of Sarawak, with its territory bifurcated by the Sarawak district of Limbang. Brunei is the only sovereign state entirely on Borneo; the remainder of the island is divided between its multi-landmass neighbours of Malaysia and Indonesia. As of 2023, the country had a population of 455,858, of whom approximately 180,000 resided in the capital and largest city of Bandar Seri Begawan. Its official language is Malay, and Sunni Islam is the state religion of the country, although other religions are nominally tolerated. The government of Brunei is an absolute monarchy ruled by the Sultan, and it implements a fusion of English common law and jurisprudence inspired by Islam, including sharia.