Almu'tasimu Billahi Muhibbuddin Tuanku Alhaj Abdul Halim Mu'adzam Shah Ibni Almarhum Sultan Badlishah, GCB KStJ (born 28 November 1927) is the 14th and current Yang di-Pertuan Agong (supreme head of state) of Malaysia, as well as the 27th and current Sultan of Kedah. He previously served as the fifth Yang di-Pertuan Agong from 1970 to 1975. He is the first person to hold the position twice, as well as the oldest elected to the office. He is a month older than the world's longest reigning monarch, King Bhumibol Adulyadej of Thailand. He is currently the third longest-reigning monarch in the world after King Bhumibol Adulyadej of Thailand and Queen Elizabeth II of England.