Current reigning monarchs by length of reign List List

| Rank_ | Name_ | Nations | Born | Ascended | Years_reigned_ |
|---|---|---|---|---|---|
| 1. | Bhumibol Adulyadej | Thailand | 5 December 1927 | 9 June 1946 | 68 years, 3 days |
| 2. | Elizabeth II | Commonwealth realms | 21 April 1926 | 6 February 1952 | 62 years, 126 days |
| 3. | Abdul Halim | Kedah (Malaysia) | 28 November 1927 | 14 July 1958 | 55 years, 333 days |
| 4. | Sikiru Kayode Adetona | Ijebuland (Nigeria) | 10 May 1934 | 4 January 1960 | 54 years, 159 days |
| 5. | Hassanal Bolkiah | Brunei | 15 July 1946 | 5 October 1967 | 46 years, 250 days |
| 6. | Goodwill Zwelithini kaBhekuzulu | Zulu people (South Africa) | 14 July 1948 | 17 September 1968 | 45 years, 268 days |