List of current reigning monarchs by length of reign

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

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 the president of France and bishop of Urgell, who by virtue of their position are also the co-princes of Andorra; monarchs without physical territories such as the Prince and Grand Master of the Sovereign Military Order of Malta; constituent monarchs such as 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. He became the longest-reigning monarch upon the death of Elizabeth II of the United Kingdom on 8 September 2022.

List

Rank	Monarch	State	Country	Born	Current age	Acceded	Years reigned
Reigns as of 18 December 2025 T 02:41 (UTC)
1	Hassanal Bolkiah	Brunei		15 July 1946	79 years, 156 days	5 October 1967	58 years, 74 days
2	Sultan bin Mohamed Al-Qassimi III	Sharjah	United Arab Emirates	2 July 1939	86 years, 169 days	25 January 1972	53 years, 327 days
3	Carl XVI Gustaf	Sweden		30 April 1946	79 years, 232 days	15 September 1973	52 years, 94 days
4	Hamad bin Mohammed Al Sharqi	Fujairah	United Arab Emirates	22 February 1949	76 years, 299 days	18 September 1974	51 years, 91 days
5	Humaid bin Rashid Al Nuaimi III	Ajman	United Arab Emirates	1 January 1931	94 years, 351 days	6 September 1981	44 years, 103 days
6	Ntfombi	Eswatini	27 December 1949	75 years, 356 days	10 August 1983	42 years, 130 days
7	Mswati III	Eswatini	19 April 1968	57 years, 243 days	25 April 1986	39 years, 237 days
8	Hans-Adam II	Liechtenstein		14 February 1945	80 years, 307 days	13 November 1989	36 years, 35 days
9	Harald V	Norway		21 February 1937	88 years, 300 days	17 January 1991	34 years, 335 days
10	Letsie III	Lesotho		17 July 1963	62 years, 154 days	7 February 1996	34 years, 20 days
11	Mizan Zainal Abidin	Terengganu	Malaysia	22 January 1962	63 years, 330 days	15 May 1998	27 years, 217 days
12	Abdullah II	Jordan		30 January 1962	63 years, 322 days	7 February 1999	26 years, 314 days
13	Hamad bin Isa Al Khalifa	Bahrain		28 January 1950	75 years, 324 days	6 March 1999	26 years, 287 days
14	Mohammed VI	Morocco		21 August 1963	62 years, 119 days	23 July 1999	26 years, 148 days
15	Syed Sirajuddin	Perlis	Malaysia	17 May 1943	82 years, 215 days	17 April 2000	25 years, 245 days
16	Sharafuddin Idris Shah	Selangor	Malaysia	24 December 1945	79 years, 359 days	22 November 2001	24 years, 26 days
17	Norodom Sihamoni	Cambodia		14 May 1953	72 years, 218 days	14 October 2004	21 years, 65 days
18	Albert II	Monaco		14 March 1958	67 years, 279 days	6 April 2005	20 years, 256 days
19	Mohammed bin Rashid Al Maktoum	Dubai	United Arab Emirates	15 July 1949	76 years, 156 days	4 January 2006	19 years, 348 days
20	Jigme Khesar Namgyel Wangchuck	Bhutan		21 February 1980	45 years, 300 days	9 December 2006	19 years, 9 days
21	Muhriz	Negeri Sembilan	Malaysia	14 January 1948	77 years, 338 days	29 December 2008	16 years, 354 days
22	Saud bin Rashid Al Mualla	Umm al-Quwain	United Arab Emirates	1 October 1952	73 years, 78 days	2 January 2009	16 years, 350 days
23	Ibrahim Iskandar	Johor	Malaysia	22 November 1958	67 years, 26 days	23 January 2010	15 years, 329 days
24	Muhammad V	Kelantan	Malaysia	6 October 1969	56 years, 73 days	13 September 2010	15 years, 96 days
25	Saud bin Saqr Al Qasimi	Ras al-Khaimah	United Arab Emirates	10 February 1956	69 years, 311 days	27 October 2010	15 years, 52 days
26	Tupou VI	Tonga		12 July 1959	66 years, 159 days	18 March 2012	13 years, 275 days
27	Willem-Alexander	Netherlands		27 April 1967	58 years, 235 days	30 April 2013	12 years, 232 days
28	Tamim bin Hamad Al Thani	Qatar		3 June 1980	45 years, 198 days	25 June 2013	12 years, 176 days
29	Philippe	Belgium		15 April 1960	65 years, 247 days	21 July 2013	12 years, 150 days
30	Nazrin Muizzuddin Shah	Perak	Malaysia	27 November 1956	69 years, 21 days	29 May 2014	11 years, 203 days
31	Felipe VI	Spain		30 January 1968	57 years, 322 days	19 June 2014	11 years, 182 days
32	Salman bin Abdulaziz Al Saud	Saudi Arabia		31 December 1935	89 years, 352 days	23 January 2015	10 years, 329 days
33	Vajiralongkorn (Rama X)	Thailand		28 July 1952	73 years, 143 days	13 October 2016	9 years, 66 days
34	Mahmud Sallehuddin	Kedah	Malaysia	30 April 1942	83 years, 232 days	11 September 2017	8 years, 98 days
35	Abdullah Sultan Ahmad Shah	Pahang	Malaysia	30 July 1959	66 years, 141 days	15 January 2019	6 years, 337 days
36	Naruhito	Japan		23 February 1960	65 years, 298 days	1 May 2019	6 years, 231 days
37	Haitham bin Tariq Al Said	Oman		11 October 1954	71 years, 68 days	11 January 2020	5 years, 341 days
38	Mohamed bin Zayed Al Nahyan	Abu Dhabi	United Arab Emirates	11 March 1961	64 years, 282 days	13 May 2022	3 years, 219 days
39	Charles III	Antigua and Barbuda		14 November 1948	77 years, 34 days	8 September 2022	3 years, 101 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	85 years, 82 days	16 December 2023	2 years, 2 days
41	Frederik X	Denmark		26 May 1968	57 years, 206 days	14 January 2024	1 year, 338 days
42	Leo XIV	Vatican City		14 September 1955	70 years, 95 days	8 May 2025	224 days
43	Guillaume V	Luxembourg		11 November 1981	44 years, 37 days	3 October 2025	76 days

List

See also