Tamil is the official language of Tamil Nadu, as per the Tamil Nadu Official Language Act, 1956.

Tamil is spoken by the largest number of people in Tamil Nadu, followed by Telugu, Kannada, and Malayalam.

Badaga is the language spoken by the Badaga people, who are the indigenous people of the Nilgiri Hills.

Malayalam is spoken by the majority of the population in the Kanyakumari district of Tamil Nadu, which borders the state of Kerala.

Tamil is spoken by the majority of the population in the Chennai district of Tamil Nadu, which is the capital of the state.

Tamil is spoken by the majority of the population in the Coimbatore district of Tamil Nadu, which is a major industrial city.

Tamil is spoken by the majority of the population in the Madurai district of Tamil Nadu, which is a major cultural and religious center.

Tamil is spoken by the majority of the population in the Tiruchirappalli district of Tamil Nadu, which is a major agricultural region.

Tamil is spoken by the majority of the population in the Thanjavur district of Tamil Nadu, which is a major rice-producing region.

Tamil is spoken by the majority of the population in the Tirunelveli district of Tamil Nadu, which is a major cotton-producing region.

Tamil is spoken by the majority of the population in the Vellore district of Tamil Nadu, which is a major industrial and educational center.

Tamil is spoken by the majority of the population in the Salem district of Tamil Nadu, which is a major textile and steel-producing region.

Tamil is spoken by the majority of the population in the Erode district of Tamil Nadu, which is a major agricultural and industrial region.

Tamil is spoken by the majority of the population in the Tiruppur district of Tamil Nadu, which is a major textile-producing region.

Tamil is spoken by the majority of the population in the Kanchipuram district of Tamil Nadu, which is a major silk-producing region.