| Lake Notoro | |
| Location: | Hokkaidō, Japan |
| Coords: | 44.0667°N 153°W |
| Outflow: | Sea of Okhotsk |
| Area: | 58km2 |
| Cities: | Abashiri |
| Pushpin Map: | Japan Hokkaido |
, also Lake Notori or Notoro Lagoon,[1] is a coastal lagoon by the northern shore of Abashiri, Hokkaidō, Japan.[2] It is included in Abashiri Quasi-National Park.
It is the 13th-largest lake in Japan. It is about 2km (01miles) northwest of Lake Abashiri and 15km (09miles) east of Lake Saroma (also a coastal lagoon).