^ a b c d e f g h i j k l m n o In the Commonwealth realms (with the exception of the United Kingdom), the head of state, Queen Elizabeth II, is represented by a Governor General.
^ The three-member presidency is the head of state collectively.
^ The Presidency Council serves as the collective head of state with the president at its head.
^ The Preface to the Constitution of the Democratic People's Republic of Korea states, "The DPRK and the entire Korean people will uphold the great leader Comrade Kim Il-sung as the eternal President of the Republic, defend and carry forward his ideas and exploits and complete the Juche revolution under the leadership of the Workers' Party of Korea." Kim Il Sung died in 1994.
^ The President of the Swiss Confederation serves solely in a primus inter pares capacity for one year.
^ On November 12, 2006 the Salvation Union of South Ossetia, opposing the leadership of Eduard Kokoity, held an alternative presidential election, in which former South Ossetian Prime Minister Dmitri Sanakoev was chosen as the president of the alternative government of South Ossetia.