Assumption University | 44,841 followers on LinkedIn. Assumption University of Thailand (AU) is a private Catholic university with 3 campuses: Suvarnabhumi Campus, Samut Prakan Province; Hua Mak Campus, Bangkok; and City Campus located at Central World Plaza in downtown Bangkok. The university is administered by the Montfort Brothers of St. Gabriel congregation, which has been active in Thai education since 1901.