普密蓬·阿杜德
Although Bhumibol was sometimes referred to as King Rama IX in English, Thais referred to him as "Nai Luang" or "Phra Chao Yu Hua" (ในหลวง or พระเจ้าอยู่หัว), which translated to "the King" and "Lord Upon our Heads", respectively. He was also called "Chao Chiwit" ("Lord of Life"). Formally, he was referred to as "Phrabat Somdet Phra Chao Yu Hua" (พระบาทสมเด็จพระเจ้าอยู่หัว) or, in legal documents, "Phrabat Somdet Phra Paraminthara Maha Bhumibol Adulyadej" (พระบาทสมเด็จพระปรมินทรมหาภูมิพลอดุลยเดช), and in English as "His Majesty King Bhumibol Adulyadej". He signed his name as ภูมิพลอดุลยเดช ป.ร. (Bhumibol Adulyadej Por Ror, the Thai equivalent of "Bhumibol Adulyadej R[ex])".