| Helgasjön | |
| Location: | Växjö Municipality in Kronobergs län in southern Småland, Sweden |
| Coordinates: | 56.9664°N 14.7682°W |
| Type: | lake |
| Pushpin Map: | Sweden Kronoberg # Sweden |
| Pushpin Map Alt: | Location of the lake |
Helgasjön (in Swedish pronounced as /ˈhɛ̂ljaˌɧœn/)[1] is a lake in Växjö Municipality, Kronobergs län in southern Småland.
The lake is situated above sea level. Its area is . Kronoberg Castle is situated by the lake.