List of longest-reigning British monarchs

The following is a list, ordered by length of reign, of the monarchs of the United Kingdom of Great Britain and Ireland (Northern Ireland after 1927), the Kingdom of Great Britain, the Kingdom of England since 925 AD, the Kingdom of Scotland since 1107 AD and the Principality of Wales from 1170 AD.

1 Overall
2 Post-Treaty of Union
- 2.1 United Kingdom
- 2.2 Great Britain
3 England
4 Scotland
5 Wales
6 The current monarch
7 Notes
8 See also

Overall

Name	Reign	Duration
from	to	days	years/days
Victoria	20 June 1837	22 January 1901	23,226	&1000000000000006300000063 years, &10000000000000216000000216 days
Elizabeth II	6 February 1952	present	21,930	&1000000000000006000000060 years, &1000000000000001500000015 days
George III	25 October 1760	29 January 1820	21,644	&1000000000000005900000059 years, &1000000000000009600000096 days
James VI of Scotland	24 July 1567	27 March 1625	21,066	&1000000000000005700000057 years, &10000000000000246000000246 days
Henry III of England	18 October 1216	16 November 1272	20,483	&1000000000000005600000056 years, &1000000000000002900000029 days
Edward III of England	25 January 1327	21 June 1377	18,410	&1000000000000005000000050 years, &10000000000000147000000147 days
William I of Scotland	9 December 1165	4 December 1214	17,892	&1000000000000004800000048 years, &10000000000000360000000360 days
Llywelyn of Gwynedd	1195	11 April 1240	unknown	c. 45 years
Elizabeth I of England	17 November 1558	24 March 1603	16,198	&1000000000000004400000044 years, &10000000000000127000000127 days
David II of Scotland	7 June 1329	22 February 1371	15,235	&1000000000000004100000041 years, &10000000000000260000000260 days

Post-Treaty of Union

United Kingdom

On 1 January 1801 the Kingdom of Great Britain united with the Kingdom of Ireland to become the United Kingdom of Great Britain and Ireland, later becoming the United Kingdom of Great Britain and Northern Ireland following the independence of the Republic of Ireland.

Name	Reign		Duration
Name	from	to	days	years/days
Victoria	20 June 1837	22 January 1901	23,226	&1000000000000006300000063 years, &10000000000000216000000216 days
Elizabeth II	6 February 1952	present	21,930	&1000000000000006000000060 years, &1000000000000001500000015 days
George III	25 October 1760	29 January 1820	21,644	&1000000000000005900000059 years, &1000000000000009600000096 days
George V	6 May 1910	20 January 1936	9,390	&1000000000000002500000025 years, &10000000000000259000000259 days
George VI	11 December 1936	6 February 1952	5,535	&1000000000000001500000015 years, &1000000000000005700000057 days
George IV	29 January 1820	26 June 1830	3,801	&1000000000000001000000010 years, &10000000000000148000000148 days
Edward VII	22 January 1901	6 May 1910	3,391	&100000000000000090000009 years, &10000000000000104000000104 days
William IV	26 June 1830	20 June 1837	2,551	&100000000000000060000006 years, &10000000000000359000000359 days
Edward VIII	20 January 1936	11 December 1936	326	326 days

Great Britain

On 1 May 1707, under the Acts of Union 1707, the Kingdom of England united with the Kingdom of Scotland as the Kingdom of Great Britain.

Name	Reign		Duration
Name	from	to	days	years/days
George III^[2]	25 October 1760	29 January 1820	21,644	&1000000000000005900000059 years, &1000000000000009600000096 days
George II	11 June 1727	25 October 1760	12,179	&1000000000000003300000033 years, &10000000000000125000000125 days
George I	1 August 1714	11 June 1727	4,697	&1000000000000001200000012 years, &10000000000000314000000314 days
Anne^[3]	8 March 1702	1 August 1714	4,529	&1000000000000001200000012 years, &10000000000000146000000146 days

England

See also: List of English monarchs

The longest claimed reign was that of James Francis Edward Stuart (the "Old Pretender"), whose pretence lasted 64 years, 3 months and 16 days as the Jacobite pretender to the thrones of England, Scotland and Ireland (17 September 1701 – 1 January 1766).

Name	Reign		Duration
Name	from	to	days	years/days
Henry III	18 or 19 October 1216	16 November 1272	20,482 or 20,483	&1000000000000005600000056 years, &1000000000000002800000028 days or 29 days
Edward III	25 January 1327	21 June 1377	18,410	&1000000000000005000000050 years, &10000000000000147000000147 days
Elizabeth I	17 November 1558	24 March 1603	16,198	&1000000000000004400000044 years, &10000000000000127000000127 days
Henry VI	31 August 1422	4 March 1461	14,065	&1000000000000003800000038 years, &10000000000000185000000185 days
Henry VI	31 October 1470	11 April 1471	162	162 days
Æthelred II	18 March 978	25 December 1013	13,065	&1000000000000003500000035 years, &10000000000000282000000282 days
Æthelred II	3 February 1014	23 April 1016	810	&100000000000000020000002 years, &1000000000000008000000080 days
Henry VIII	22 April 1509	28 January 1547	13,795	&1000000000000003700000037 years, &10000000000000281000000281 days
Henry I	3 August 1100	1 December 1135	12,903	&1000000000000003500000035 years, &10000000000000120000000120 days
Henry II (co-ruler with Henry the Young King)	25 October 1154	6 July 1189	12,673	&1000000000000003400000034 years, &10000000000000254000000254 days
Edward I	20 November 1272	7 July 1307	12,646	&1000000000000003400000034 years, &10000000000000229000000229 days
Alfred	24 April 871	26 October 899	10,412	&1000000000000002800000028 years, &10000000000000185000000185 days
Edward the Elder	27 October 899	17 July 924	9,029	&1000000000000002400000024 years, &10000000000000264000000264 days
Charles II^[4]	29 May 1660	6 February 1685	9,019	&1000000000000002400000024 years, &10000000000000253000000253 days
Charles I^[5]	27 March 1625	30 January 1649	8,710	&1000000000000002300000023 years, &10000000000000309000000309 days
Henry VII	22 August 1485	21 April 1509	8,642	&1000000000000002300000023 years, &10000000000000242000000242 days
Edward the Confessor	8 June 1042	5 January 1066	8,612	&1000000000000002300000023 years, &10000000000000211000000211 days
Richard II	22 June 1377	29 September 1399	8,134	&1000000000000002200000022 years, &1000000000000009900000099 days
James I^[1]	24 March 1603	27 March 1625	8,039	&1000000000000002200000022 years, &100000000000000030000003 days
Edward IV	4 March 1461	3 October 1470	3,500	&100000000000000090000009 years, &10000000000000213000000213 days
Edward IV	11 April 1471	9 April 1483	4,381	&1000000000000001100000011 years, &10000000000000363000000363 days
William I	12 December 1066	9 September 1087	7,563	&1000000000000002000000020 years, &10000000000000258000000258 days
Edward II	7 July 1307	20 January 1327	7,137	&1000000000000001900000019 years, &10000000000000197000000197 days
Cnut	30 November 1016	12 November 1035	6,921	&1000000000000001800000018 years, &10000000000000347000000347 days
Stephen	22 December 1135	7 April 1141	1,933	&100000000000000050000005 years, &10000000000000106000000106 days
Stephen	1 November 1141	25 October 1154	4,741	&1000000000000001200000012 years, &10000000000000358000000358 days
John	6 April 1199	19 October 1216	6,406	&1000000000000001700000017 years, &10000000000000196000000196 days
Edgar I	1 October 959	8 July 975	5,759	&1000000000000001500000015 years, &10000000000000280000000280 days
Æthelstan	2 August 924 (or 925)	27 October 939	5,564 or 5,199	&1000000000000001500000015 years, &1000000000000008600000086 days or &1000000000000001400000014 years, &1000000000000008600000086 days
Henry IV	29 September 1399	20 March 1413	4,920	&1000000000000001300000013 years, &10000000000000172000000172 days
William III^[6] (co-ruler with Mary II)	13 February 1689	8 March 1702	4,770	&1000000000000001300000013 years, &1000000000000002300000023 days
Henry the Young King (co-ruler with Henry II)	14 June 1170	11 June 1183	4,745	&1000000000000001200000012 years, &10000000000000362000000362 days
William II	9 September 1087	2 August 1100	4,710	&1000000000000001200000012 years, &10000000000000327000000327 days
Anne^[3]	8 March 1702	1 August 1714	4,529	&1000000000000001200000012 years, &10000000000000146000000146 days
Richard I	6 July 1189	6 April 1199	3,561	&100000000000000090000009 years, &10000000000000274000000274 days
Eadred	26 May 946	23 November 955	3,468	&100000000000000090000009 years, &10000000000000181000000181 days
Henry V	21 March 1413	31 August 1422	3,450	&100000000000000090000009 years, &10000000000000163000000163 days
Edmund I	27 October 939	26 May 946	2,403	&100000000000000060000006 years, &10000000000000211000000211 days
Edward VI	28 January 1547	6 July 1553	2,351	&100000000000000060000006 years, &10000000000000159000000159 days
Mary II^[7] (co-ruler with William III)	13 February 1689	28 December 1694	2,144	&100000000000000050000005 years, &10000000000000318000000318 days
Mary I (co-ruler with Philip)	19 July 1553	17 November 1558	1,947	&100000000000000050000005 years, &10000000000000121000000121 days
Philip (co-ruler with Mary I)	25 July 1554	17 November 1558	1,576	&100000000000000040000004 years, &10000000000000115000000115 days
James II^[8]	6 February 1685	11 December 1688	1,404	&100000000000000030000003 years, &10000000000000309000000309 days
Eadwig	23 November 955	1 October 959	1,043	&100000000000000020000002 years, &10000000000000312000000312 days
Edward the Martyr	9 July 975	18 March 978	984	&100000000000000020000002 years, &10000000000000253000000253 days
Harold I	12 November 1037	17 March 1040	856	&100000000000000020000002 years, &10000000000000126000000126 days
Harthacnut	17 March 1040	8 June 1042	813	&100000000000000020000002 years, &1000000000000008300000083 days
Richard III	26 June 1483	22 August 1485	788	&100000000000000020000002 years, &1000000000000005700000057 days
Louis (disputed)	14 June 1216	22 September 1217	465	&100000000000000010000001 year, &10000000000000100000000100 days
Harold II	5 January 1066	14 October 1066	282	282 days
Edmund II	23 April 1016	30 November 1016	221	221 days
Matilda (disputed)	7 April 1141	1 November 1141	208	208 days
Edward V	9 April 1483	26 June 1483	78	78 days
Edgar II	15 October 1066	17 December 1066	63	63 days
Sweyn Forkbeard	25 December 1013	3 February 1014	40	40 days
Jane (disputed)	10 July 1553	19 July 1553	9	9 days

Scotland

Name	Reign	Duration
from	to	days	years/days
James VI^[1]	24 July 1567	27 March 1625	21,066	&1000000000000005700000057 years, &10000000000000246000000246 days
William I	9 December 1165	4 December 1214	17,892	&1000000000000004800000048 years, &10000000000000360000000360 days
David II	7 June 1329	22 February 1371	15,235	&1000000000000004100000041 years, &10000000000000260000000260 days
Alexander III	6 July 1249	19 March 1286	13,405	&1000000000000003600000036 years, &10000000000000256000000256 days
Malcolm III	17 March 1058	13 November 1093	13,025	&1000000000000003500000035 years, &10000000000000241000000241 days
Alexander II	4 December 1214	6 July 1249	12,633	&1000000000000003400000034 years, &10000000000000214000000214 days
James I	4 April 1406	21 February 1437	11,281	&1000000000000003000000030 years, &10000000000000323000000323 days
James V	9 September 1513	14 December 1542	10,688	&1000000000000002900000029 years, &1000000000000009600000096 days
David I	23 April 1124	24 May 1153	10,623	&1000000000000002900000029 years, &1000000000000003100000031 days
James III	3 August 1460	11 June 1488	10,174	&1000000000000002700000027 years, &10000000000000313000000313 days
Charles II^[4]	30 January 1649	3 September 1651	946	&100000000000000020000002 years, &10000000000000216000000216 days
29 May 1660	6 February 1685	9,019	&1000000000000002400000024 years, &10000000000000253000000253 days
James IV	11 June 1488	9 September 1513	9,220	&1000000000000002500000025 years, &1000000000000009000000090 days
Mary I	14 December 1542	24 July 1567	8,988	&1000000000000002400000024 years, &10000000000000222000000222 days
Charles I^[5]	27 March 1625	30 January 1649	8,710	&1000000000000002300000023 years, &10000000000000309000000309 days
James II	21 February 1437	3 August 1460	8,564	&1000000000000002300000023 years, &10000000000000164000000164 days
Robert I	25 March 1306	7 June 1329	8,475	&1000000000000002300000023 years, &1000000000000007400000074 days
Robert II	22 February 1371	19 April 1390	6,996	&1000000000000001900000019 years, &1000000000000005600000056 days
Alexander I	8 January 1107	23 April 1124	6,315	&1000000000000001700000017 years, &10000000000000106000000106 days
Robert III	19 April 1390	4 April 1406	5,828	&1000000000000001500000015 years, &10000000000000350000000350 days
William II^[6]	11 May 1689	8 March 1702	4,683	&1000000000000001200000012 years, &10000000000000301000000301 days
Anne^[3]	8 March 1702	1 August 1714	4,529	&1000000000000001200000012 years, &10000000000000146000000146 days
Malcolm IV	24 May 1153	9 December 1165	4,582	&1000000000000001200000012 years, &10000000000000199000000199 days
Mary II^[7]	11 May 1689	28 December 1694	2,057	&100000000000000050000005 years, &10000000000000231000000231 days
James VII^[8]	6 February 1685	11 December 1688 claimed until 16 September 1701	1,404 6,065 claimed	&100000000000000030000003 years, &10000000000000309000000309 days &1000000000000001600000016 years, &10000000000000222000000222 days claimed
John Balliol	17 November 1292	10 July 1296	1,331	&100000000000000030000003 years, &10000000000000236000000236 days

Wales

Name	Reign	Duration
from	to	days	years/days
Llywelyn I	1195	11 April 1240	unknown	c. 45 years
Owain I	1137	1170	unknown	c. 33 years
Llywelyn II	1253	11 December 1282	unknown	c. 29 years
Dafydd I	1170	1195	unknown	c. 25 years
Owain IV (disputed)	16 September 1400	c. 1416	unknown	c. 16 years
Owain II	26 February 1246	1253	unknown	c. 7 years
Owain III (disputed)	May 1372	July 1378	unknown	c. 6 years
Dafydd II	12 April 1240	25 February 1246	2,145	&100000000000000050000005 years, &10000000000000319000000319 days
Dafydd III	12 December 1282	3 October 1283	295	295 days

The current monarch

Should Elizabeth II still be reigning on—

10 September 2015, at the age of 89, she would surpass Queen Victoria as the longest-reigning monarch in British and Commonwealth history (as well as the longest-reigning female monarch in world history).
26 May 2024, she would surpass Louis XIV of France as the longest reigning monarch in European history. At that point she would be &1000000000000009800000098 years, &1000000000000003500000035 days old.
18 October 2034, at the age of 108, she would surpass Sobhuza II of Swaziland as the longest documented reigning monarch (male or female) in world history, unless the reign of King Bhumibol Adulyadej (King Rama IX) of Thailand surpasses 82 years, 254 days on 18 February 2029, at the age of 101. He ascended the Thai throne 5 years and 242 days before she ascended the British throne, and is one year and 228 days her junior.^[9]

Notes

^ ^a ^b ^c James VI, King of Scots, became James I, King of England, in 1603.
^ George III, King of Great Britain, became King of the United Kingdom of Great Britain and Ireland in 1801.
^ ^a ^b ^c Anne, Queen of England and Queen of Scotland, became Queen of Great Britain in 1707.
^ ^a ^b Charles II was King of Scotland from 30 January 1649 to 3 September 1651; he was King of England and King of Scotland concurrently from 29 May 1660 to 6 February 1685. Upon his restoration, Charles had his reign backdated to the death of his father, but in practice his reign began in 1660.
^ ^a ^b Charles I was King of England and King of Scots concurrently.
^ ^a ^b William of Orange became William III, King of England, on 13 February 1689 and William II, King of Scotland, on 11 May 1689.
^ ^a ^b Mary II became Queen of England on 13 February 1689 and Queen of Scotland on 11 May 1689.
^ ^a ^b James was James II, King of England, and James VII, King of Scotland, concurrently.
^ Current reigning monarchs by length of reign