St.-Pius-Gymnasium is a private Catholic Gymnasium located in Coesfeld near Münster, Germany.

It was founded in 1953 by Bishop Michael Keller as an Internat (all-boys boarding school), in order to educate about 100 students for the priesthood.

Girls were admitted starting in 1969,[2] and in the same year a building was erected for up to 300 students.

In 1979, the last of the boarding students left, and the following year a major expansion to the buildings was made.

In 1995, the architect Josef Paul Kleihues designed an extension to the building which included a music room.