What is the process for obtaining a Thai ID and passport as a descendant of a Thai parent?

Just so you're clear (and even though you didn't ask. IF you are here on your Aussie passport <- EVEN if you get your thai i/d and passport you're still here as an Aussie in the eyes of the thaiz (the immigration people).

and the only way you could change that would be exiting and re-entered the country ON a thai passport.

BUT

all you need to do is take your birth certificate and a copy of your thai parents i/d card, house book listing to the immigration office and they will give you a year extension based on the fact you're thai.

Just because you didn't get your "thainess" recoginized yet doesn't mean you're not thai by birth (you are :) )

Here's what that stamp looks like, (it's the same as all extensions 1900baht)

It took me four hours to get my Thai Id but it's been awesome having one! Once you get your id, getting a passport is a breeze. How did you get a Thai birth certificate? Maybe I should get it for my kiddos. We have Certificates from the states but they aren't "certified" or "legalized" for use here and I'm a little nervous about them. Going to immigration today for Visa stuff 😓🙏🏽

Me too! I was supposed to go to Thailand last summer to try to get my Thai ID (I’m American with both Thai parents). I know you need a Thai address (I have family there) and have to go do an interview and lots of paperwork. That’s all I know 😛

You are so lucky. Good luck.

Lots of info here