Maha Vajiralongkorn Bodindradebayavarangkun, now also known as King Rama X (Thai: มหาวชิราลงกรณ บดินทรเทพยวรางกูร; rtgs: Mahawachiralongkon Bodinthrathepphayawarangkun; IPA: [máhǎːwáʨʰíraːloŋkɔːn bɔːdintʰrátʰêːppʰájáwáraːŋkuːn]); was born on born 28 July 1952, is the new King of Thailand. Rama X is the tenth monarch of the Chakri Dynasty. At the age of 64, Vajiralongkorn is the oldest Thai monarch to ascend to the throne.
He is the only son of King Bhumibol Adulyadej and Queen Sirikit. On December 28, 1972, at the age of 20, he was made crown prince by King Rama IX, his father.
After his father’s death on October 13, 2016, he was expected to succeed to the throne of Thailand but asked for time to mourn before taking the throne. He accepted the throne on the night of 1 December 2016 but will not be crowned formally until after the cremation of his father. The government retroactively declared his reign to have begun on 13 October 2016, upon his father’s death.