Assumption University was initially originated from Assumption Commercial College in 1969. In 1972, it was officially established and accredited as Assumption Business Administration College (ABAC). In 1990, it was granted new status as "Assumption University" by the Ministry of University Affairs. The University is a non-profit institution administered by the Brothers of St. Gabriel, a worldwide Catholic religious order. The University is administered by a governing Council. The Council members are appointed jointly by the Ministry of University Affairs (Thailand) and the Brothers of St. Gabriel.