Rijeka/jezero/more na O
- Odra
- Orljava
- Ohridsko jezero
- Olga
- Ontario
- Ohridsko
- Ohrid
- Ombla
- Ohotsko
- Ohotsko more
- Ottawa
- Otawa
- Orinoco
- Oranje
- Oman
- Ocean
- Orašnica
- Orahovica
- Okašnica
- Otvoreno
- Ohridsko j
The words in the list Rijeka/jezero/more na O come from players of the word game City, Country, River.