St. Christopher Church is the Protestant-Lutheran parish church located in the village of Reinhausen in the district of Göttingen, Lower Saxony. The church stands on the sandstone rock of the Kirchberg above the village center. It was originally built as a castle chapel by the Counts of Reinhausen in the 10th century and later served as a church for the collegiate monastery and the Benedictine monastery of Reinhausen that emerged from it in the 12th century. The church in Reinhausen, commonly known as the Reinhausen monastery church, has served as the parish church of the village of Reinhausen for many years. Following the introduction of the Reformation in 1542, the monastery was gradually dissolved, and the church was then solely used as a parish church, with brief interruptions. Today, it belongs to the Göttingen church district in the Hildesheim-Göttingen branch of the Hanoverian regional church.
Despite significant structural changes in the Gothic and Baroque styles, the overall appearance of the Romanesque monastery church remains prominent. This is especially evident in the west facade with its double tower. The building type underwent several construction phases, transforming from a Romanesque basilica to a hall church. The interior of the church contains several late medieval works of art, such as two late Gothic altars, extensive remains of wall paintings, and stone sculptures depicting St. Christopher, the patron saint of the church.