Osek may refer to:

• Osek (Beroun District), a municipality and village in the Central Bohemian Region
• Osek (Jičín District), a municipality and village in the Hradec Králové Region
• Osek (Písek District), a municipality and village in the South Bohemian Region
• Osek (Rokycany District), a municipality and village in the Plzeň Region
• Osek (Strakonice District), a municipality and village in the South Bohemian Region
• Osek (Teplice District), a town in the Ústí nad Labem Region
• Osek, a village and part of Kněžice (Nymburk District) in the Central Bohemian Region
• Osek, a village and part of Řenče in the Plzeň Region
• Osek nad Bečvou, a municipality and village in the Olomouc Region
• Velký Osek, a municipality and village in the Central Bohemian Region

• Osiek, Wejherowo County, also known as Òsek, a village in Poland

• Osek, Nova Gorica, a village in Slovenia

• OSEK, automotive electronics standard

• All pages with titles containing Osek
• Osiek (disambiguation)

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