Kỳ Sơn may refer to several places in Vietnam:
Kỳ Sơn, a ward of Phú Thọ province Kỳ Sơn District, a former rural district of Nghệ An Province Kỳ Sơn District, a former rural district of Hòa Bình Province Kỳ Sơn, Hòa Bình, a former township and capital of Kỳ Sơn District, Hòa Bình Province Kỳ Sơn, Haiphong, a former commune of Thủy Nguyên District Kỳ Sơn, Hà Tĩnh, a former commune of Kỳ Anh District Kỳ Sơn, Tân Kỳ, a former commune of Tân Kỳ District, Nghệ An Province Kỳ Sơn, Hải Dương, a former commune of Tứ Kỳ District