@Brandon ***********
if parents were permanent residents then it dose but I believe cut off was 1972 . If his birth certificate says he is Thai .then he is still Thai . I was born in Thailand in 1969 to uk parents and have been Thai since birth. Yes I have Thai ID and passport. His birth certificate will say khon Thai if he was born Thai . My point being,when and where and to whom is all relevant. Laws have been amended many times .just saying .not trying to be smart ass . Thai citizenship Facebook group is the place to go for all things about that .