North Sea (disambiguation)
- Arctic Ocean
- Beihai (disambiguation)
- Boreal Sea
- Caribbean Sea
- East Sea (disambiguation)
- LS Lowry
- Lake Baikal
- Mars ocean hypothesis
- North Aral Sea
- North Atlantic Ocean
- North Sea
- North Sea (film)
- North Sea Fleet
- North Sea Region
- North Sea, New York
- Sea of Okhotsk
- South Sea (disambiguation)
- West Sea (disambiguation)
- Yellow Sea
- 北海 (disambiguation)