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Nauru: Heads of State: 1968-2026
Chairman of the Constitutional Convention
31 Jan 1968 - 31 Jan 1968 Hammer DeRoburt [1]
Chairman of the Council of State
31 Jan 1968 - 17 May 1968 Hammer DeRoburt 
President of the Republic of Nauru [2]
17 May 1968 - 22 Dec 1976 Hammer DeRoburt 
22 Dec 1976 - 19 Apr 1978 Bernard Dabarnen Dowiyogo
19 Apr 1978 - 11 May 1978 Lagumot Gagiemem Nimidere Harris
11 May 1978 - 17 Sep 1986 Hammer DeRoburt 
17 Sep 1986 - 1 Oct 1986 Kennan Ranibok Adeang
1 Oct 1986 - 12 Dec 1986 Hammer DeRoburt 
12 Dec 1986 - on or before 20 Dec 1986 Kennan Ranibok Adeang 
on or before 20 Dec 1986 - 17 Aug 1989 Hammer DeRoburt 
17 Aug 1989 - 12 Dec 1989 Nangindeit Temanimon Kenas Aroi
12 Dec 1989 - 22 Nov 1995 Bernard Dabarnen Dowiyogo 
22 Nov 1995 - 12 Nov 1996 Lagumot Gagiemem Nimidere Harris 
12 Nov 1996 - 26 Nov 1996 Bernard Dabarnen Dowiyogo 
26 Nov 1996 - 19 Dec 1996 Kennan Ranibok Adeang 
19 Dec 1996 - 13 Feb 1997 Reuben James Tullen Kun
13 Feb 1997 - 18 Jun 1998 Kinza Godfrey Clodumar
18 Jun 1998 - 27 Apr 1999 Bernard Dabarnen Dowiyogo 
27 Apr 1999 - 20 Apr 2000 René Reynaldo Harris
20 Apr 2000 - 30 Mar 2001 Bernard Dabarnen Dowiyogo 
30 Mar 2001 - 9 Jan 2003 René Reynaldo Harris 
9 Jan 2003 - 17 Jan 2003 Bernard Dabarnen Dowiyogo 
17 Jan 2003 - 18 Jan 2003 René Reynaldo Harris 
18 Jan 2003 - 10 Mar 2003 Bernard Dabarnen Dowiyogo  [3]
Acting President of the Republic of Nauru
10 Mar 2003 - 20 Mar 2003 Derog Gioura [4]
President of the Republic of Nauru
20 Mar 2003 - 29 May 2003 Derog Gioura 
29 May 2003 - 8 Aug 2003 Ludwig Derangadage Scotty
8 Aug 2003 - 22 Jun 2004 René Reynaldo Harris 
22 Jun 2004 - 19 Dec 2007 Ludwig Derangadage Scotty 
19 Dec 2007 - 10 Nov 2011 Marcus Ajemada Stephen
10 Nov 2011 - 15 Nov 2011 Frederick William Henry Pitcher
15 Nov 2011 - 11 Jun 2013 Sprent Jared Brent Arumogo Dabwido
11 Jun 2013 - 27 Aug 2019 Baron Divavesi Waqa
27 Aug 2019 - 29 Sep 2022 Lionel Rouwen Aingimea
29 Sep 2022 - Russ Joseph Kun

[1] Chairman of the Constitutional Convention exercised the functions of the Council of State in accordance with Art. 89 (4) of the Constitution of the Republic of Nauru of 1968 (not amended to 17 May 1968).
[2] The Constitution of the Republic of Nauru of 1968 routinely refers to the office as President of Nauru.
[3] Dowiyogo died in Washington, D.C., United States, at 19:47 9 Mar 2003 (= 12:47 10 Mar 2003 in Nauru).
[4] Acting for the absent incumbent from 25 Feb 2003.
Last update: 08 May 2025
https://www.archontology.org/nations/nauru/00_1968_td_s.php