Former St. John commandry, Religious architectural ensemble in Münchenbuchsee, Switzerland.

The former St. John commandry is a walled complex in Münchenbuchsee. Its south side holds the courtyard of Cuno's castle, the convent house, the commander's house and the church, whose choir was built in 1260–80 and whose stained glass dates from the 13th century. The north side had a summer house, guesthouse and workshops; the church tower dates from 1891.

In 1180 the childless Cuno of Buchsee granted his lands, including Münchenbuchsee, Wankdorf and Worblaufen, to the Knights Hospitaller to found a hospital; Pope confirmed the gift in 1192. Bern's nobility added estates, and in 1329 the commandery joined Bern's Burgrecht. In 1528 commander Peter Englisberg handed it to Bern, ending monastic life; the buildings became a bailiff's seat, and a bailiff's castle and tithe barn were built in 1600–20.

The commandery's name comes from the medieval Buchsee family, whose last male heir, Cuno, transferred his lands to the Knights Hospitaller in 1180. The knights provided pastoral care, ran a pilgrims' hospital and cared for the poor. The monastic community was small: in 1480 only the commander, the prior and six knights lived there.

The site is located along Klosterweg and Oberdorfstrasse and is easy to reach on foot. Parts of the complex now house other functions, so access to certain areas may be limited.

A castle building was constructed between 1600 and 1603, replacing an earlier summer residence used by the community. This fortified structure gives the site an unexpected character that sets it apart from typical monastery complexes.