Assumption College (Thai: โรงเรียนอัสสัมชัญ) is a private Catholic boys school in Bangkok, Thailand. The school, founded by Rev. Fr. Emile-August Colombet on 16 February 1885, is the first school founded by the Gabrielite Brothers in Thailand. Assumption College is the third-oldest boys school in Thailand. Assumption College is one of four schools which participates in Jaturamitr Samakkee, a traditional football match by the four oldest boys' schools in Thailand: Suankularb Wittayalai School, Debsirin School, Bangkok Christian College and Assumption College.