The Tongan language, spoken in the Tonga Islands, is a Polynesian language belonging to the larger Austronesian language family. Tongan serves as the official language of the Kingdom of Tonga, a Pacific island nation. It is also spoken by Tongan communities in other countries, including New Zealand, the United States, and Australia, due to migration and diaspora.

Tongan is known for its rich oral tradition, and its writing system is based on the Latin alphabet. The language exhibits a system of social registers, with different forms of speech used in formal and informal contexts. The linguistic structure includes subject-verb-object word order, and it is notable for its use of extensive kinship terms, reflecting the importance of family relationships in Tongan culture.

In Tonga, efforts are made to preserve and promote the Tongan language. The Tongan education system includes Tongan language instruction, and cultural events celebrate the language’s role in preserving the nation’s unique identity. Despite the challenges posed by globalisation and the influence of other languages, Tongan continues to be a vibrant and integral part of Tongan culture and heritage.