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Answered8 months ago

What steps should I take to claim my Thai citizenship and maintain dual citizenship as a person born to a Thai parent?

Mare ******
asked Feb 25, 2026
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Ok totally new to all of this. I was born in Bangkok in the 70s. My Dad is American. My Mom is Thai. Both are deceased. I haven’t been been back to visit in 20 years. Will be changing that soon. My question is what steps do I need to take to claim my Thai citizenship and maintain dual citizenship assuming this is allowed? Sorry I am old school and need step by step instructions. I plan on retiring in less than 10 years and want all this done and to

Find a place to buy in Thailand

Thank you for any help.
Answer summary
The user seeks guidance on claiming Thai citizenship, as they were born in Bangkok to a Thai mother and an American father but have not returned in 20 years. They are looking for step-by-step instructions to obtain Thai citizenship and maintain dual citizenship, as they plan to retire in Thailand in the next decade. Comments suggest visiting the Thai consulate or embassy for official guidance, joining online groups for shared experiences, gathering necessary documents (like birth and death certificates), and potential challenges regarding dual citizenship for those born abroad.
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Wayne ********
Wayne ********
Best bet is an agent you may laugh.But they do sure save a lot of time
Dennis ***********
Dennis ***********
Birth certificate- Blood DNA testing ( now with mother’s family)- Check with Thai Citizenship association
Dca *****
Dca *****
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Dca *****
Dca *****
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Brook ********
Brook ********
You can research your options in the THAI CITIZENSHIP facebook group.

The question is asked and answered at least monthly.

Good luck!

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Mike *******
Mike *******
You will definitely need your birth certificate amd your mom and dads death certificates. Thats pretty much all u need to prove your Thai in order to get thai citizenship. Once you have all those documents go to the Thai Embassy either in the U.S or Thailand and start the process.
Nongnuch ********
Nongnuch ********
Mike Maday there is no Thai Embassy in Thailand. She needs the certificates legalized by the Thai Embassy or consulate in the States and needs them co-legalized by the MfA in Bangkok
Mare ******
Mare ******
OP
Mike Maday thank you. You as well!
Mare ******
Mare ******
OP
Mike Maday thank you I have them all. And their death certificates and their marriage license
Mike *******
Mike *******
Mare Mare Good

Luck! 😉
Mike *******
Mike *******
Mare Mare I am actually having to do that with the Poland citizenship based on my family ancestry as well.
Wojtek *******
Wojtek *******
Poland and Thailand two different cases 🙂 my daughter got both passports (Polish and Thai) Poland doesn’t really care about dual citizenship, Thai do care a lot about those things 🙂 as long as your child is teenager you still can apply easily, but if you older is not that easy like you said 🙂 in worst case scenario she might be asking to even drop US passport.
Wojtek *******
Wojtek *******
I know from my Thai family, and from some Thais with kids living abroad (Australia, USA) if parents haven’t done anything until their kids are around 20 yo is much harder to get dual citizenship even though one of the parent is Thai. I hope im wrong on this, but i think you might start learning proper Thai, and some national songs to be able to get it :) like i said i hope im wrong, but i know every child born abroad parents try to get Thai passport as soon as possible. Ps. There is also a case with military service and so on.
Mare ******
Mare ******
OP
@Wojtek ******
thank you
John ********
John ********
Contact any family you have in thailand also ...useful for obtaining relevant papers and id card etc
Greg ***********
Greg ***********
the Thai consulate or embassy in your home country would be the first institution I would ask about the steps to take to gain Thai citizenship
Khun **********
Khun **********
Greg Alexander indeed
Jeremy ********
Jeremy ********
Join the Thai citizenship fb group they can answer all your questions
Mare ******
Mare ******
OP
Jeremy Miller ok will do
Mare ******
Mare ******
OP
Jeremy Miller didn’t know they had one thank you
Jeremy ********
Jeremy ********
Mare Mare they do it’s very informative

They will break it down step by step for you
Jeremy ********
Jeremy ********
Mare Mare that’s irrelevant if your name is in the Tambien Bahn it’s 95% easier to get back in the system
Mare ******
Mare ******
OP
Jeremy Miller we moved to US when I was 6 months old
Jeremy ********
Jeremy ********
Mare Mare if you have any relatives in Thailand reach out to them to see if you’re registered in the Blue House book (Tambien Bahn) this will make the entire process so so so much easier
Mare ******
Mare ******
OP
Jeremy Miller appreciate it

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