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Marienburg may refer to:

Historical German names

• Ordensburg Marienburg (Malbork Castle), the 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