List of state leaders in 1917
1916 state leaders - Events of 1917 - 1918 state leaders - State leaders by year
Africa
Asia
- Afghanistan - Habibullah Khan, King of Afghanistan (1901–1919)
- Brunei - Muhammad Jamalul Alam II, Sultan of Brunei (1906–1924)
- China
- President -
- Li Yüan-hung, President of the Republic of China (1916–1917)
- Feng Kuo-Chang, President of the Republic of China (1917–1918)
- Premier -
- Duan Qirui, Premier of the Republic of China (1916–1917)
- Wu Tingfang, Acting Premier of the Republic of China (1917)
- Li Jingxi, Premier of the Republic of China (1917)
- Xu Shichang, Premier of the Republic of China (1917)
- Jiang Zhaozong, Acting Premier of the Republic of China (1917)
- Li Jingxi, Premier of the Republic of China (1917)
- Duan Qirui, Premier of the Republic of China (1917)
- Weng Shizhen, Acting Premier of the Republic of China (1917–1918)
- Japan
- Mongolia - Bogd Khan, Khan of Mongolia (1911–1924)
- Oman - Taimur Bin Faisal, Sultan of Oman (1913–1932)
Australia and Oceania
Europe
- Albania - National government collapsed (1916–1918)
- Andorra
- Co-Princes -
- First Syndic - Pere Font, First Syndic of Andorra (1915–1917)
- Austria-Hungary
- Belgium
- Denmark
- Finland - (newly independent)
- France -
- German Empire -
- Greece
- Italy
- Luxembourg
- Victor Thorn, Prime Minister of Luxembourg (1916-19 June 1917)
- Léon Kauffmann, Prime Minister of Luxembourg (19 June 1917-1918)
- Netherlands -
- Norway
- Ottoman Empire
- Portugal
- Romania - King Ferdinand (1914–1927)
- Russia
- Spain
- Álvaro Figueroa Torres, President of the Government (December 9, 1915 - April 19, 1917)
- Manuel García Prieto, President of the Government (April 19, 1917 - June 11, 1917)
- Eduardo Dato Iradier, President of the Government (June 11, 1917 - November 3, 1917)
- Manuel García Prieto, President of the Government (November 3, 1917 - March 22, 1918)
- Sweden
- Hjalmar Hammarskjöld, Prime Minister of Sweden (1914–1917)
- Carl Swartz, Prime Minister of Sweden (1917)
- Nils Edén, Prime Minister of Sweden (1917–1920)
- United Kingdom -
North America and the Caribbean
South America