| Sigöldulón | |
| Lake Type: | reservoir |
| Inflow: | Tungnaá |
| Outflow: | Tungnaá |
| Basin Countries: | Iceland |
| Area: | 14km2 |
| Volume: | 195hm3 |
| Pushpin Map: | Iceland |
| Pushpin Map Alt: | Location of Sigöldulón in Iceland. |
The lake Sigöldulón (pronounced as /is/) is a reservoir in Iceland, also known as Krókslón in Icelandic pronounced as /ˈkʰrouksˌlouːn/. Situated in the south of the country, not far from Landmannalaugar, it is one of the country's 20 largest lakes at 14 km2.
Both the lake and the nearby power station (Sigölduvirkjun in Icelandic pronounced as /ˈsɪːɣˌœltʏˌvɪr̥cʏn/) take their names from a tuff ridge at about 600 m above sea level where the river Tungnaá once passed through a canyon. Its waters now flow in tubes into the power station, constructed between 1973 and 1977.