Surname Siammai (Siammai 
) , globally, is a rare last name. The family name Siammai is characteristic of South-eastern Asia, particularly Thailand, where it is quite a rare surname.
Nit, Husnee, Winita, Sarayut, Sathika, Sakesan, Surasak, Suriyon, Suparat, Supatra, Sumalee, Suwimol, Somchai, Aphinan, Aphisit, Chanapa, Chaiyut, Chakrit, Korapat, Kitisak, Porntip, Pichaya, Damiya, Daruya, Rasita, Ratana, Nara, Niti, Manat, Manop, Sumet, Butsa, Prlcha, Phuen, Teera, Nabun, Pimsupa, Haris, Sirita, Sukhum, Somjai, Soisin, Aricha, Bhusit, Pansin, Palida, Pranom, Preeda, Manoon, and Pimnada