Nadech Kugimiya is the youngest adopted child of Yoshio Kugimiya (his adoptive father) and Sudarat Kugimiya (his adoptive mother). Nadech Kugimiya was born in Khonkaen, Thailand. His nickname Barry comes from his original nickname "Brand". He is of Thai and Austrian descent. He is currently a student at Rangsit University, majoring in the Faculty of Communication Arts.