Hvítárvatn

Hvítárvatn (, "white river lake"; also known as Hvítárlón, "white river lagoon") is a lake in the Highlands of Iceland and the source of the glacial river Hvítá, Árnessýsla. It is located 45 km northeast of Gullfoss waterfall. Its surface is about 30 km2 and its greatest depth is 84 m. It lies at an elevation of 420 m.

There are some rivers and lakes with the Icelandic adjective hvítur (white) in their name. This is explained by the source of most of Iceland's freshwater, originating from glaciers which make the water light in colour.