St. Johannes Evangelist is a Catholic parish church in Cappenberg [de], now part of Selm, North Rhine-Westphalia, Germany.

The church holds the Cappenberger Barbarossakopf, a reliquary regarded as a medieval portrait bust of the emperor Friedrich Barbarossa.

[4] As described by German architectural historian Albert Ludorff [de], the former abbey church is a mostly 12th-century Romanesque building.

The church has a standard cruciform basilica plan, with a nave of three aisles and three bays ending in a transept and a two-bay choir.

[1] The church features a head reliquary, called Cappenberger Barbarossakopf [de].