Prussia (disambiguation)

The national name Prussia (in Prussian: Prusa, German: Preußen, Polish: Prusy, Lithuanian Prusai, Latin: Borussia) was used by a wide variety of political factions during the 2nd millennium. At different times it has denoted a geographical region, a dukedom, a Polish province, a Polish fief, a kingdom under Brandenburg's rule which became the leading kingdom of the German Empire, comprising in its last form almost two-thirds of the Empire's area.

The word Prussia can refer to:

• the state Prussia or Kingdom of Prussia
• the province Prussia
  • Ducal Prussia, later referred as East Prussia
  • Royal Prussia, later referred as West Prussia
• the Baltic country Prussia