Chaiya Mitchai (Thai: เอ, ไชยา มิตรชัย) (born April 5, 1974) is a singer and likay and drama actor from Thailand. His real name is Sayma Somboon and is nicknamed A. He was born in Ayutthaya, Thailand on April 5, 1974 to Somsak Jaikwang (ex-Likay actor and songwriter) and Duangduen Somboon (ex-Likay actress). He has a younger sister (Ann Mitchai), a younger brother (Mit Mitchai) and graduated with a Bachelor of Law from Ramkhamhaeng University.