King Rama IX of Thailand

Bhumibol Adulyadej[a] (5 December 1927 – 13 October 2016), conferred with the title King Bhumibol the Great in 1987 (officially conferred by King Vajiralongkorn in 2019),[2][3][4][5] 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,[6] and is the third-longest verified reigning sovereign monarch in world history after King Louis XIV and Queen Elizabeth II, reigning for 70 years and 126 days.[7] During his reign, he was served by a total of 30 prime ministers beginning with Pridi Banomyong and ending with Prayut Chan-o-cha.