List of monarchs of Tonga

This is a list of monarchs of Tonga since 1845. In this year, the constitution of Tonga established the role of the monarch. The first constitutional monarch of Tonga was George Tupou I.

Name	Lifespan	Reign start	Reign end	Notes	Family	Image
George Tupou I	(1797-12-04)4 December 1797 – 18 February 1893(1893-02-18) (aged 95)	4 December 1845	18 February 1893	Son of Tupoutoʻa, 17th Tuʻi Kanokupolu	Tupou
George Tupou II	(1874-06-18)18 June 1874 – 5 April 1918(1918-04-05) (aged 43)	18 February 1893	5 April 1918	Double Great-grandson of George Tupou I	Tupou
Sālote Tupou III	(1900-03-13)13 March 1900 – 16 December 1965(1965-12-16) (aged 65)	5 April 1918	16 December 1965	Daughter of George Tupou II	Tupou
Tāufaʻāhau Tupou IV	(1918-07-04)4 July 1918 – 10 September 2006(2006-09-10) (aged 88)	16 December 1965	10 September 2006	Son of Sālote Tupou III	Tupou
George Tupou V	(1948-05-04)4 May 1948 – 18 March 2012(2012-03-18) (aged 63)	11 September 2006	18 March 2012	Son of Tāufaʻahau Tupou IV	Tupou
Tupou VI	(1959-07-12) 12 July 1959	18 March 2012	Incumbent	Son of Tāufaʻāhau Tupou IV Brother of George Tupou V	Tupou