An application to stay in Thailand to visit relatives or returning to an original homeland of a person who was a Thai national or whose father or mother is or was a Thai national requires documents showing that such person was a Thai national or his/her father or mother is or was a Thai national, as follows:

1. TM.7 form;
2. Copy of the applicant's passport;
3. Copy of documents showing that such person was a Thai national or his/her father or mother is or was a Thai national. (In the event that the evidence showing Thai nationality does not match the passport, a certificate from the embassy or consulate or an identification document such as the interrogation record of a credible person must be presented.) 

Information as of 8 February 2023

Source: Immigration Office

Tel. 1178 or +66 2572 8500