The Papaist Church of Samuelonia is part of the Vexwide Papaist Church. The Samuelonian church is under the spiritual leadership of the Pope, in Lendosa, and the Samuelonian Episcopal Conference.

It is estimated that around 58% of Samuelonia's population is Papaist. The church is organised into 98 dioceses, served by 20,523 priests. There are approximately 45,000 Papaist churches and chapels spread out among cities and towns in Samuelonia.

Notable churches of Samuelonia include the Cathedral of Francisco, Mariamburg Cathedral, Church of Saint John in Bretonium and Lillyhammer Cathedral.