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| YEAR | DATE | EVENT | KING | PRIME MINISTER |
| Kingdom - dinasty 'Ahoe'itu | 'Ahoe'itu | |||
| Lolofakangalo | ||||
| Fanga'one'one | ||||
| Lihau | ||||
| Kofutu | ||||
| Kaloa | ||||
| Ma'uhau | ||||
| 'Apuanea | ||||
| 'Afulunga | ||||
| Momo | ||||
| Tu'itatu'i | ||||
| 1200 | Tala'atama | |||
| Koe Nui | ||||
| Tala'i-Ha'apepe | ||||
| Talakaifaiki | ||||
| 1250 | Talafapite | |||
| Ma'akatue | ||||
| Tu'i Tonga-'i-pui-pui | ||||
| Tupou Havea I | ||||
| Tata-fu'u-eiki-mei-mu'a | ||||
| Lomi'aetupu'a | ||||
| Havea II | ||||
| Takalau'a | ||||
| 1535 | Kau'ulu'fonua I | |||
| Vakafuhu | ||||
| Pui-Pui-Fatu | ||||
| Kau'ulu'fonua II | ||||
| Tapu'osi I | ||||
| Uluakimata I | ||||
| Fatafehi | ||||
| Tapu'osi Kau'ulu'fonua III | ||||
| Uluakimata II | ||||
| Fatafehi Tu'ipulatu I | ||||
| Fakana'ana'a | ||||
| 17xx | Fatafehi Tu'ipulatu II | |||
| 1770 | Fatafehi Paulaho | |||
| 1784 | Fatafehi Ma'ulubekotufa | |||
| 1793 | Fatafehi Faununu'iava | |||
| 1810 | interregnum | |||
| 1827 | Samuelio Fatafehi Laufilitonga | |||
| 1865 | 9 december | dinasty Tupou | George Tupou I | |
| 1875 | november | Tevita Unga | ||
| 1879 | - | |||
| 1881 | april | Shirley Waldemar Baker | ||
| 1890 | july | George Tuku`aho | ||
| 1893 | 18 february | George Tupou II | Jiosateki Toga | |
| 1900 | 19 may | UK protectorate | ||
| 1905 | january | Jione Mateialono | ||
| 1912 | 30 september | Tevita Tu`ivakano | ||
| 1918 | 12 aprile | queen Salote Tupou III | ||
| 1922 | 30 june | Uiliami Tupou-lahi Tungi | ||
| 1940 | july | Salomone Ata | ||
| 1949 | 12 december | Prince Taufa`ahau Tungi (king Taufa`ahau Tupou IV) | ||
| 1965 | 16 dicembre | Taufa`ahau Tupou IV | Prince Fatafehi Tu`ipelehake | |
| 1970 | 5 june | Independent Kingdom | ||
| 1991 | 21 august | Baron Vaea of Houma | ||
| 2000 | 3 january | Prince Lavaka Ata Ulukalala | ||
| 2006 | 13 february | Feleti Sevele | ||
| 2006 | 11 september | George Tupou V | ||
| 2010 | 22 december | Tu'ivakano | ||
| 2012 | 18 march | Tupou VI | ||
| 2014 | 30 december | Akilisi Pohiva | ||
| 2019 | 27 september | Pohiva Tu'i' | ||
| 2021 | 29 december | Siaosi Sovaleni | ||
| 2025 | 3 february | Aisake Eke |