World’s longest reigning monarchs Queen Elizabeth II, the first British sovereign to mark 70 years on the throne, is currently the world’s longest reigning monarch Queen Elizabeth II Age: 95 UK* 70 years Sultan Hassanal Bolkiah, 75 Brunei 54 years Queen Margrethe II 81 Denmark 50 years King Carl XVI Gustaf 75 Sweden 48 years King Mswati III 53 Eswatini 35 years Prince Hans-Adam II 76 Liechtenstein 32 years King Harald V 84 Norway 31 years King Letsie III 58 Lesotho 30 years King Abdullah II 60 Jordan 23 years King Hamad bin Isa Al Khalifa, 72 Bahrain 22 years *Also Canada, Australia, New Zealand and 11 other Commonwealth realms Numbers valid as of Jan 2022. List restricted to heads of state Pictures: Getty Images, Newscom © GRAPHIC NEWS