Names of countries in seven languages
| Finnish | Tonga Tongan kuningaskunta |
| Swedish | Tonga Konungariket Tonga |
| North Saami | Tonga Tonga gonagasriika |
| English | Tonga Kingdom of Tonga (the) |
| French | Tonga (les, pl., f.) Royaume des Tonga (le) |
| German | Tonga (n.) Königreich Tonga (das) |
| Russian | Тонга Королевство Тонга |
Abbreviations
| abbr. name | abbreviated name |
| AT | Austria |
| CH | Switzerland |
| DE | Germany |
| f. | feminine |
| fmr | former |
| FR | France |
| GB | United Kingdom |
| hist. | historical |
| in dipl. relations | in diplomatic relations |
| lang. planning | language planning |
| m. | masculine |
| n. | neuter |
| offic. | official |
| oft. | often |
| pl. | plural |
| prev. | previously |
| UN | the United Nations |
| unoffic. | unofficial |
| * | not independent |