What is the world's longest-reigning current monarch?

The world's longest-reigning current monarch is King Maha Vajiralongkorn of Thailand, also known as King Rama X. He ascended to the throne on October 13, 2016, following the death of his father, King Bhumibol Adulyadej. Prior to his accession, King Vajiralongkorn had served as the crown prince and heir apparent for 44 years.

As of March 2023, King Vajiralongkorn has been on the throne for over six years. He has continued his father's legacy of promoting unity and stability in Thailand, as well as modernizing the monarchy and carrying out various charitable and social activities.

The world's longest-reigning current monarch is Hassanal Bolkiah, the Sultan and Yang di-Pertuan of Brunei. He has been on the throne since October 5, 1967, and as of March 8, 2023, his reign has lasted 55 years, 11 months, and 3 days.

Bolkiah is a member of the House of Bolkiah, which has ruled Brunei for over 600 years. He is the eldest son of Sultan Omar Ali Saifuddien III and his third wife, Pengiran Anak Damit. Bolkiah was educated in Brunei, the United Kingdom, and Australia. He was appointed as Crown Prince in 1961 and ascended to the throne on the death of his father in 1967.

Bolkiah is a constitutional monarch, but he exercises considerable power in Brunei. He is the head of state, the head of government, and the supreme commander of the armed forces. He is also the Minister of Defense, Finance, and Foreign Affairs. Bolkiah is a wealthy man, with a net worth estimated to be over $20 billion. He is the owner of the Brunei Investment Agency, which controls a large portfolio of assets around the world.

Bolkiah is a controversial figure. He has been criticized for his authoritarian rule and his lavish lifestyle. However, he is also respected for his commitment to development in Brunei. He has overseen the modernization of the country's infrastructure and the expansion of its economy.