List of current reigning monarchs by length of reign

This is a list of reigning monarchs sorted by length of service.

Hassanal Bolkiah, the longest-reigning existing monarch

This list includes monarchs who do not reign over entire nations, such as Muhammad V of Kelantan, but does not include former monarchs and pretenders, such as Simeon II of Bulgaria, ex officio monarchs such as Emmanuel Macron who in his capacity as President of France is also Co-Prince of Andorra, monarchs without physical territories such as the Prince and Grand Master of the Sovereign Military Order of Malta, constituent monarchs such as the traditional African rulers, or monarchs whose position is unofficial, such as Tenzin Gyatso, 14th Dalai Lama.

Hassanal Bolkiah is the longest-reigning existing monarch, having been Sultan of Brunei since 5 October 1967.^[1] He became the longest-reigning monarch upon the death of Elizabeth II of the United Kingdom on 8 September 2022.^[2]

List

Rank	Monarch	State	Country	Born	Current age	Acceded	Years reigned
Reigns as of 8 May 2025 T 17:31 (UTC)
1	Hassanal Bolkiah	Brunei		15 July 1946	78 years, 297 days	5 October 1967	57 years, 215 days
2	Sultan bin Mohamed Al-Qassimi III	Sharjah	United Arab Emirates	6 July 1939	85 years, 306 days	25 January 1972	53 years, 103 days
3	Carl XVI Gustaf	Sweden		30 April 1946	79 years, 8 days	15 September 1973	51 years, 235 days
4	Hamad bin Mohammed Al Sharqi	Fujairah	United Arab Emirates	22 February 1949	76 years, 75 days	18 September 1974	50 years, 232 days
5	Humaid bin Rashid Al Nuaimi III	Ajman		1 January 1931	94 years, 127 days	6 September 1981	43 years, 244 days
6	Mswati III	Eswatini[a]		19 April 1968	57 years, 19 days	25 April 1986	39 years, 13 days
7	Hans-Adam II	Liechtenstein		14 February 1945	80 years, 83 days	13 November 1989	35 years, 176 days
8	Harald V	Norway		21 February 1937	88 years, 76 days	17 January 1991	34 years, 111 days
9	Letsie III	Lesotho		17 July 1963	61 years, 295 days	7 February 1996[b]	33 years, 161 days[b]
10	Mizan Zainal Abidin	Terengganu	Malaysia	22 January 1962	63 years, 106 days	15 May 1998	26 years, 358 days
11	Abdullah II	Jordan		30 January 1962	63 years, 98 days	7 February 1999	26 years, 90 days
12	Hamad bin Isa Al Khalifa	Bahrain		28 January 1950	75 years, 100 days	6 March 1999	26 years, 63 days
13	Mohammed VI	Morocco		21 August 1963	61 years, 260 days	23 July 1999	25 years, 289 days
14	Syed Sirajuddin	Perlis	Malaysia	17 May 1943	81 years, 356 days	17 April 2000	25 years, 21 days
15	Henri	Luxembourg		16 April 1955	70 years, 22 days	7 October 2000	24 years, 213 days
16	Sharafuddin Idris Shah	Selangor	Malaysia	11 December 1945	79 years, 148 days	22 November 2001	23 years, 167 days
17	Norodom Sihamoni	Cambodia		14 May 1953	71 years, 359 days	14 October 2004	20 years, 206 days
18	Albert II	Monaco		14 March 1958	67 years, 55 days	6 April 2005	20 years, 32 days
19	Mohammed bin Rashid Al Maktoum	Dubai	United Arab Emirates	15 July 1949	75 years, 297 days	4 January 2006	19 years, 124 days
20	Jigme Khesar Namgyel Wangchuck	Bhutan		21 February 1980	45 years, 76 days	9 December 2006	18 years, 150 days
21	Muhriz	Negeri Sembilan	Malaysia	14 January 1948	77 years, 114 days	29 December 2008	16 years, 130 days
22	Saud bin Rashid Al Mualla	Umm al-Quwain	United Arab Emirates	1 October 1952	72 years, 219 days	2 January 2009	16 years, 126 days
23	Ibrahim Iskandar	Johor	Malaysia[c]	22 November 1958	66 years, 167 days	23 January 2010	15 years, 105 days
24	Muhammad V	Kelantan	Malaysia	6 October 1969	55 years, 214 days	13 September 2010	14 years, 237 days
25	Saud bin Saqr Al Qasimi	Ras al-Khaimah	United Arab Emirates	10 February 1956	69 years, 87 days	27 October 2010	14 years, 193 days
26	Tupou VI	Tonga		12 July 1959	65 years, 300 days	18 March 2012	13 years, 51 days
27	Willem-Alexander	Netherlands		27 April 1967	58 years, 11 days	30 April 2013	12 years, 8 days
28	Tamim bin Hamad Al Thani	Qatar		3 June 1980	44 years, 339 days	25 June 2013	11 years, 317 days
29	Philippe	Belgium		15 April 1960	65 years, 23 days	21 July 2013	11 years, 291 days
30	Nazrin Muizzuddin Shah	Perak	Malaysia	27 November 1956	68 years, 162 days	29 May 2014	10 years, 344 days
31	Felipe VI	Spain		30 January 1968	57 years, 98 days	19 June 2014	10 years, 323 days
32	Salman bin Abdulaziz Al Saud	Saudi Arabia		31 December 1935	89 years, 128 days	23 January 2015	10 years, 105 days
33	Vajiralongkorn (Rama X)	Thailand		28 July 1952	72 years, 284 days	13 October 2016	8 years, 207 days
34	Mahmud Sallehuddin	Kedah	Malaysia	30 April 1942	83 years, 8 days	11 September 2017	7 years, 239 days
35	Abdullah Sultan Ahmad Shah	Pahang		30 July 1959	65 years, 282 days	15 January 2019	6 years, 113 days
36	Naruhito	Japan		23 February 1960	65 years, 74 days	1 May 2019	6 years, 7 days
37	Haitham bin Tariq Al Said	Oman		11 October 1954	70 years, 209 days	11 January 2020	5 years, 117 days
38	Mohamed bin Zayed Al Nahyan	Abu Dhabi	United Arab Emirates	11 March 1961	64 years, 58 days	13 May 2022	2 years, 360 days
39	Charles III	Antigua and Barbuda		14 November 1948	76 years, 175 days	8 September 2022	2 years, 242 days
		Australia
		The Bahamas
		Belize
		Canada
		Grenada
		Jamaica
		New Zealand
		Papua New Guinea
		Saint Kitts and Nevis
		Saint Lucia
		Saint Vincent and the Grenadines
		Solomon Islands
		Tuvalu
		United Kingdom
40	Mishal Al-Ahmad Al-Jaber Al-Sabah	Kuwait		27 September 1940	84 years, 223 days	16 December 2023	1 year, 143 days
41	Frederik X	Denmark		26 May 1968	56 years, 347 days	14 January 2024	1 year, 114 days
42	Leo XIV	Vatican City		14 September 1955	69 years, 236 days	8 May 2025	0 days

See also

• List of current monarchs of sovereign states
• List of current heads of state and government
• List of current state leaders by date of assumption of office
• List of longest-reigning monarchs
• List of shortest-reigning monarchs
• Lists of state leaders by age

Notes

1. The country was formerly named the Kingdom of Swaziland until 19 April 2018.
2. Letsie III first reigned during 12 November 1990 – 25 January 1995, was deposed, then returned to the throne on 7 February 1996. Length-of-reign calculation includes both tenures.
3. Ibrahim Iskandar is also the currently-reigning Yang di-Pertuan Agong, and has reigned for 1 year, 97 days (since 31 January 2024).