Longest-Serving Living Monarchs

With the death of King Bhumibol Adulyadej of Thailand in 2016 after a 70-year reign, Queen Elizabeth II of the U.K. became the longest-serving living monarch, reigning since 1952.

king and queen of sweden

Sweden's King Carl Gustaf and Queen Silvia
Source: Jessica Gow/TT via AP

Rank MonarchCountryBeginning of reign
1. Elizabeth IIUnited Kingdom2/6/1952
2. Hassanal BolkiahBrunei10/5/1967
3. Qaboos bin Said al SaidOman7/23/1970
4. Margrethe IIDenmark1/14/1972
5. Carl XVI GustafSweden9/15/1973
6. Mswati IIISwaziland4/25/1986
7. AkihitoJapan1/7/1989
8. Hans-Adam IILiechtenstein11/13/1989
9. Harald VNorway1/17/1991
10. Letsie IIILesotho2/7/1996


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