Chaiya Mitchai (Thai: เอ, ไชยา มิตรชัย) (born April 5, 1974) is a Thai luk thung singer[1] with likay and drama actor.

Mitchai born as Sayma Somboon (nicknamed A) in Wiset Chaichan, Ang Thong, central 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.

His stage name comes from a combination of the names of two legendary Thai stars were Chaiya Suriyan and Mitr Chaibancha.

He became famous for his songs titled Gra-tong long tang (กระทงหลงทาง) with Mai tham-mada (ไม่ธรรมดา) in 1997.