Last name Prompichai (Prompichai 
) , all over the world, is a rare cognomen. The last name Prompichai is characteristic of Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname.
Sam, Chaleampon, Nutthamon, Phanitnat, Nisachol, Theodore, Chowanee, Chokanan, Arpaporn, Supattra, Nongyao, Nittaya, Tanawan, Jutamas, Rudjired, Rebecca, Somboon, Sirirat, Hom, Maria, Kanta, Teddy, Seksan, Prasai, Chittapart, Pracha, Maadora, Montree, Moragot, Sarayut, Saracha, Singhan, Jaroon, and Pitchayapa