Tonga language

Tonga may refer to five different languages:
 * Tongan language, or Tonga (ISO 639-3: ) – a Polynesian language spoken in Tonga in the South Pacific
 * Tonga language (Zambia and Zimbabwe), or Chitonga (ISO 639-3: ) – a Bantu language spoken in Zambia, Zimbabwe and Mozambique
 * Tonga language (Malawi), or Chitonga (ISO 639-3: ) – a Bantu language spoken in Malawi
 * Tonga language (Mozambique), or Gitonga (ISO 639-3: ) – a Bantu language spoken in Mozambique
 * Ten'edn, also known as Tonga or Mos (ISO 639-3: ) – a Mon-Khmer language spoken in Thailand and Malaysia