samran

Lordy, there have been some terribly misleading answers here particularly from those who are saying the Thai government turn a blind eye to people holding a dual citizenship. As stated by some of the more knowledgeable posters, it hasn't been illegal since 1992 and dual citizens born to a Thai parent have the option to choose a nationality for one year following their 20th birthday - but if they don't there is no penalty (who ever posted the 2nd edition of the 1992 legislation which lasted all of three weeks has no clue). I mean, the government is turning such a 'blind eye' to that issue that immigration actually now have an official policy on not charging Thai citizens overstay if they enter on a foreign passport. Some blind eye! https://www.thaicitizenship.com/thai-citizens-entering-thailand-on-a-foreign-passport/ I await more ill-informed responses. And to that predictably wrong poster, no it isn't a commercial website - it's a volunteer information resource with a few ads to help cover hosting costs - and there is a link in the article to the official government circular on the matter.

Interesting slide on the screen. Its a little blurry but it looks like some stats on citizenship applications. Can't quite read it, but maybe if someone has some sort of picture enhancer it would clear up and we can read it.

This might clarify things a bit. https://www.thaicitizenship.com/renouncing-your-non-thai-citizenship

Not quite - anyone born on Thai soil pre-1992 can now actively claim citizenship via changes to nationality act legislation ammended in 2008. https://en.wikipedia.org/wiki/Thai_nationality_law Anyone who is born to two PR's still gets citizenship. This hasn't changed (though i am guessing there would only be a handful of married PRs in Thailand)

Not under the table. You've got to read section 7 and section 7(bis) together. Section 7 says: "The following persons shall acquire Thai nationality by birth: (1) a person born of a father or a mother of Thai nationality, whether inside or outside the Kingdom of Thailand; (2) a person born in the Kingdom of Thailand, except those under section 7 bis paragraph one. Then, section 7 bis paragraph one basically goes onto define who it means by this, which is any person born to a parent who is in Thailand on temporary visa, or a parent who is here illegally. So who is left? Those born here to parents who are both here on permanent visas - ie. Thai PR. Though it isn't stated explicitly, thats the implication. Section 17 alludes to them again (loss of Thai nationality) as there is a special section just for these children who can lose Thai nationality under certain circumstance. https://www.thaicitizenship.com/thai-dual-citizenship/ I personally know 4 people who have Thai citizenship from this method. All blond haired and blue eyed, born in the 1970s to British parents with PR. Back then, it must be noted, up until the early 1970s, basically every extension of stay effectively granted you PR, so these people got it as a matter of course. Their kids - most who are friends of mine, are living and working here in Bangkok, one who owns a large business many in Bangkok may have heard of. http://web.krisdika.go.th/data/document/ext810/810050_0001.pdf

Fair enough. Some people don't get it. Sounds like the equivalent of Russian immigration getting the jewelers magnifying glasses out to closely inspect her passport as we crossed the border there once. Luckily the passports were of good quality! UOB asked my wife for a copy of her work permit despite having a valid ID card but we waited for the penny to drop and it eventually did. For Thailand stuff, its a copy of the RG for women. I would have given them to call special branch if there were issues so they could have the law explained to them but things never have gotten to that stage.

There is no issue. Sounds like speculation to me. My wife got announced in the RG 8 years ago this month. All she's got is a certified copy of the RG announcement + ID card and tabien baan. She's never had an issue and ID card (and perhaps a copy of the TB) has all she has ever needed. She is well and truely 'in the system'.