Key castle (disambiguation)
Schlüsselburg stands for:
- Shlisselburg , city in Leningrad Oblast, Russia
- Municipality of Lnáře , Okres Strakonice, Czech Republic
- District of Peter Hagen in North Rhine-Westphalia, see Schlüsselburg (Petershagen) , with Castle Key castle and manor Schlüsselburg
- a former castle near Markgröningen, see Schlüsselburg (Markgröningen)
- a former castle in Detern , see Schluesselburg (Detern)
Schlüsselburg is the family name of the following people:
- Konrad Schluesselburg (1543–1619), German Lutheran theologian
- Manfred Schluesselburg (* 1947), German Nations Cup rider and show jumper
- Sebastian Schluesselburg (* 1983), German politician (Die Linke), MdA
- Sven Schlüsselburg (* 1981), German show jumper
