- a country in the South Pacific consisting of an island group south-east of Fiji; population 120,900 (est. 2009); official languages, Tongan and English; capital, Nuku’alofa. Also called the Friendly Islands.
The kingdom of Tonga consists of about 170 volcanic and coral islands, of which thirty-six are inhabited. Visited by the Dutch in the early 17th century, Tonga became a British protectorate in 1900 and an independent Commonwealth state in 1970. It has been a constitutional monarchy since 1875