The Austronesian language family is the dominant language family in the Indian Ocean region, with languages such as Malagasy, Indonesian, and Malay being widely spoken.

Dhivehi is the official language of the Maldives and is spoken by the majority of the population.

Malagasy is the official language of Madagascar and is spoken by the majority of the population.

Creole is the main language spoken in the Chagos Islands, a British Indian Ocean Territory.

English is the official language of Mauritius, although French and Creole are also widely spoken.

Seychellois Creole is the main language spoken in the Seychelles, although English and French are also official languages.

Sinhala is the official language of Sri Lanka, although Tamil is also an official language and is spoken by a significant portion of the population.

Hindi is the most widely spoken language in the Andaman and Nicobar Islands, although Bengali and Tamil are also spoken by significant portions of the population.

English is the official language of the Cocos (Keeling) Islands, although Malay is also spoken by a significant portion of the population.

Dhivehi is the official language of the Maldives and is spoken by the majority of the population.

English is the official language of the British Indian Ocean Territory, although Creole is also spoken by a significant portion of the population.

Malayalam is the official language of the Lakshadweep Islands and is spoken by the majority of the population.

Comorian is the official language of the Comoros, although French and Arabic are also official languages.

Seychellois Creole is the main language spoken in the Seychelles, although English and French are also official languages.

Dhivehi is the official language of the Maldives and is spoken by the majority of the population.