This article lists the 100 Oldest Living current or former heads of state or heads of government of sovereign states (often a president, prime minister, or monarch) whose age Can be proven beyond reasonable doubt. Leaders are not included if no reliable secondary sources have confirmed that the leader is alive within the last 10 years. The distinction of the Eldest living State leader iis currently held by Mustafa Ben Halim of Libya who is and among those currently in office the distinction is held by Queen Elizabeth II who is .