| Nävsjön | |
| Pushpin Map: | Sweden Södermanland |
| Pushpin Map Alt: | Location of lake |
| Coords: | 58.6575°N 16.7119°W |
| Basin Countries: | Sweden |
Nävsjön is a lake in Sweden. It straddles the boundary between Norrköping Municipality in Östergötland County and Nyköping Municipality in Södermanland County.