Commandry of the Knights of Malta in Český Dub, Medieval monastery in Český Dub, Czech Republic.

The Commandry of the Knights of Malta in Český Dub is a former Johannite commandry whose small and large halls and Chapel of St John the Baptist were uncovered in 1991. The complex, part of the listed castle grounds, shows late Romanesque and Gothic building techniques.

The commandry existed before 1260 and was founded by Havel of Lemberk, husband of Saint Zdislava, who settled the Knights of Saint John south of Ještěd and moved market rights from Světlá to Dub. The first direct records date from 1291 and 1294, when the Bishop of Kraków granted forty-day indulgences to pilgrims visiting the Church of the Holy Spirit. In June 1425 Hussite troops under Jan Čapek of Sán captured Český Dub and the commandry fell; its remains were later rebuilt into a Renaissance chateau.

The order was the Knights of St John, not of Malta. The commandry's chapel of St John the Baptist was reconsecrated and again serves liturgical purposes; the complex is managed by the Podještědské Museum in Český Dub. The town itself grew from the market village Dub, initially called Nová Světlá.

The commandry is managed by the Podještědské muzeum in Český Dub, and the chapel of St John the Baptist was reconsecrated and is used for liturgical purposes. The complex forms part of the protected castle area, with heritage protection extended to the newly found rooms from 8 December 1995.

The commandry's remains were thought lost until 1991, when Tomáš Edel helped uncover the small and large halls and the Chapel of St John the Baptist. The chapel was reconsecrated and again serves liturgical purposes; the complex belongs to the Podještědské Museum.