Worldwide, วิชัยสิทธิ์ (วิชัยสิทธิ์ 
, Vichaiyasit ) is a very rare masculine forename. The given name วิชัยสิทธิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare male name. Very seldom, วิชัยสิทธิ์ is the last name as well as the forename.