Bhumibol Adulyadej

Bhumibol Adulyadej, conferred with the title King Bhumibol the Great in 1987, was the ninth monarch of Thailand from the Chakri dynasty, titled Rama IX. Reigning since 9 June 1946, he was the world's longest-reigning current head of state from the death of Emperor Hirohito of Japan in 1989 until his own death in 2016, and is both the second-longest reigning monarch of all time and the longest-reigning monarch to have reigned only as an adult, reigning for 70 years and 126 days. During his reign, he was served by a total of 30 prime ministers beginning with Pridi Banomyong and ending with Prayut Chan-o-cha.