Marienburg may refer to:
Historical German names Ordensburg Marienburg (Malbork Castle), a large brick castle built by the Teutonic Knights Malbork, Poland, the site of the Ordensburg Marienburg, formerly Marienburg (Royal Prussia/Crown of the Kingdom of Poland 1466-1772) Alūksne, Latvia Feldioara, Romania
Places Germany Marienburg Castle (Ostalbkreis), a castle in Niederalfingen near Aalen, Germany Marienburg Castle (Hanover), a castle in Hanover district, residence of the Prince of Hanover Marienburg Castle (Hildesheim), a castle in Hildesheim, Lower Saxony Köln-Marienburg, a district of Rodenkirchen in the city of Cologne A former castle and monastery on the River Moselle Marienburg Airport (currently a park), an airport in Nuremberg before the construction of the Nuremberg Airport
Elsewhere Marienburg, Papua New Guinea, a town in the East Sepik province Marienburg, Suriname, a village and former sugar plantation Malbork, Poland (Marienburg in German) Malbork Castle, a castle in Malbork, Poland Aluksne, a town in Latvia – historically named Marienburg in 14 century by Teutonic Order (castle on island in central part was also named Marienburg)
Fictional places Marienburg (Warhammer), a fictional city in the Warhammer Fantasy world
See also Siege of Marienburg (disambiguation) Treaty of Marienburg Marienberg (disambiguation) Marienborg, the summer residence of Denmark's Prime Minister