The Advent Christian Church is a historic church building in John Day, Oregon, United States. Lay minister and carpenter Samuel Bayliss Hope led the members of the local Advent Christian Church congregation in construction starting in 1898 and reaching effective completion in 1900. The church combined the overall Gothic Revival plan and form that remained popular for churches in that period with the rich ornamentation of the Victorian era, especially around the entry and steeple. It is believed that Hope was personally responsible for most of the decorative woodwork on both the interior and exterior, including the latest example of the extensive use of manually planed moldings in a historic building in Oregon.