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- Oberbartau: Bārta
- Odsen: Mētriena
- Ohger: Ogre
- Ohlenhof: Oļi
- Oknist: Aknīste
- Olai: Olaine
- Oppekaln: Apekalns
- Osolshof: Ozolaine
- Ossun: Asūne
Read more about this topic: List Of German Exonyms For Places In Latvia
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Read more about this topic: List Of German Exonyms For Places In Latvia