A list of all the monarchies in the world as of December 2016, listed by country with type of monarchy.

Bahrain
King Hamad bin Isa al-Khalifa
Constitutional

Belgium
King Philippe
Constitutional

Bhutan
Jigme Khesar Namgyal Wangchukin
Constitutional

Brunei
Sultan Haji Hassanal Bolkiah
Constitutional

Cambodia
King Norodom Sihamoni
Constitutional

Denmark
Queen Margrethe II
Constitutional

Japan
Emperor Akihito
Constitutional

Jordan
King Abdullah II
Constitutional

Kuwait
Sabah Al-Ahmad Al-Jaber Al-Sabah Constitutional

Lesotho
King Letsie III
Constitutional

LiechtensteinPrince Hans Adam II Constitutional

Luxembourg
Grand Duke Henri
Constitutional

Malaysia
Almu’tasimu Billahi Muhibbuddin Tuanku Alhaj Abdul Halim Mu’adzam Shah Ibni Almarhum Sultan Badlishah
Constitutional

Monaco
Prince Albert II
Constitutional

Morocco
King Muhammad VI
Constitutional

Netherlands
King Willem-Alexander
Constitutional

Norway
King Harald V
Constitutional

Oman
Sultan Qabus ibn Sa’id
Absolute

Qatar
Emir Sheik Tamim ibn Hamad Al Thani
Constitutional

Samoa
Tuiatua Tupua Tamasese Efi
Constitutional

Saudi Arabia
King Salman
Absolute

Spain
Felipe VI
Parliamentary

Swaziland
King Mswati III
Absolute

Sweden
King Carl XVI Gustaf
Constitutional

Thailand
King Maha Vajiralongkorn Bodindradebayavarangkun
Constitutional

Tonga
King Tupou VI
Constitutional

United Kingdom
Queen Elizabeth II
Constitutional

Queen Elizabeth II is also the Sovereign of fifteen countries in the Commonwealth of Nations: Antigua and Barbuda, Australia, the Bahamas, Barbados, Belize, Canada, Grenada, Jamaica, New Zealand, Papua New Guinea, St. Kitts and Nevis, St. Lucia, St. Vincent and the Grenadines, the Solomon Islands, and Tuvalu.