Hindi is the most widely spoken language among the Indian diaspora in Thailand, due to the large number of Indian immigrants from Hindi-speaking regions of India.

Punjabi is spoken by the second largest group of Indian diaspora in Thailand, due to the significant number of Sikh immigrants from Punjab, India.

Tamil is spoken by the third largest group of Indian diaspora in Thailand, due to the presence of a sizable Tamil community in the country.

Gujarati is spoken by a significant number of Indian diaspora in Thailand, particularly in the commercial and business communities.

Marathi is spoken by a relatively small number of Indian diaspora in Thailand, compared to the other languages mentioned.

Historical migration patterns have played a major role in shaping the linguistic diversity of the Indian diaspora in Thailand, as different groups of Indian immigrants brought their native languages with them.

The Indian diaspora in Thailand has actively engaged in various efforts to preserve and promote their native languages, including establishing language schools, organizing cultural events, and publishing newspapers and magazines.

The Indian diaspora in Thailand faces several challenges in maintaining their native languages, including lack of language resources, limited opportunities for language use, and intermarriage with Thai nationals.

The Thai government has taken steps to support the linguistic diversity of the Indian diaspora, including providing language education, promoting multilingualism, and encouraging cultural exchange.

The linguistic diversity of the Indian diaspora in Thailand has had a positive impact on the country's cultural landscape, enriching the local cuisine, promoting religious tolerance, and fostering intercultural understanding.

Bengali is not among the top languages spoken by the Indian diaspora in Thailand.

Nepali is spoken by a relatively small number of Indian diaspora in Thailand, but has a significant presence in neighboring countries like Nepal and Bhutan.

English is the primary language of instruction in most Indian-run schools in Thailand, as it is widely used as a medium of communication in international education.

Intermarriage with Thai nationals, limited opportunities for language use, and lack of language resources have all contributed to the decline of certain Indian languages among the diaspora in Thailand.

The Indian government has implemented various initiatives to support the linguistic heritage of the Indian diaspora in Thailand, including providing scholarships for language learning, organizing cultural exchange programs, and establishing language centers.