not quite Thai Visa, but related. My partner has Thai and USA passports. Can she leave Thailand for Australia on the Thai passport, arrive and leave Aust with the US passport, and return to Thailand on the Thai passport? I have heard things have changed in the last 12 months too. thanks if allowed
TLDR : Answer Summary
A Thai national can exit Thailand using a Thai passport and enter Australia with a US passport, returning to Thailand on the Thai passport. However, there may be concerns about immigration upon return due to lacking entry stamps in the Thai passport.