Thai passports for adopted Thai children are valid for 5 years. Your Thai child can also hold a New Zealand passport, assuming you, the adoptive parent, are a New Zealander and applied for Citizenship by Descent for your child.

Thai adopted children can travel and enter Thailand on their New Zealand passport. However, ICANZ recommends that you also keep their Thai passport valid. Why? it shows respect for their Thai heritage and makes it easier for them to live in Thailand or own land in Thailand when they are older, if they choose to do this.

To renew your child's Thai passport, both parents and the child need to travel to the Royal Thai Embassy in Wellington.

The Thai Embassy website will provide you with instructions.

(Note: The link translates the page into English)

Click here to view.

Original Link (in Thai)