Tonga may refer to five different languages:
ton
) – a Polynesian language spoken in Tonga in the South Pacifictoi
) – a Bantu language spoken in Zambia, Zimbabwe and Mozambiquetog
) – a Bantu language spoken in Malawitoh
) – a Bantu language spoken in Mozambiquetnz
) – a Mon-Khmer language spoken in Thailand and Malaysia