A fortified church is a church that is built to serve a defensive role in times of war. Such churches were specially designed to incorporate military features, such as thick walls, battlements, and embrasures. Others, such as the Ávila Cathedral were incorporated into the town wall. Monastic communities, such as Solovki Monastery, are often surrounded by a wall, and some churches, such as St. Arbogast in Muttenz, Switzerland, have an outer wall as well. Churches with additional external defences such as curtain walls and wall towers are often referred to more specifically as fortress churches or Kirchenburgen.

All Saints' Church is in the village of Boltongate, Cumbria, England. It is an active Anglican parish church in the deanery of Solway, the archdeaconry of West Cumberland and the diocese of Carlisle. A former fortified church, it is recorded in the National Heritage List for England as a designated Grade I listed building.