Ahmad Shah is the fifth modern Sultan of Pahang, which is the title of the hereditary constitutional head of Pahang, Malaysia, as well as the Head of the Islam in the state. Ahmad also served as the seventh Yang di-Pertuan Agong of Malaysia from 1979 to 1984, a position that made him one of the few elected monarchs in the world. Ahmad is currently 88 years old, and his oldest son, Tengku Abdullah, is the Crown Prince and Regent of Pahang.