Radoniq Lake (Albanian: Liqeni i Radoniqit; Serbian: Радоњићко језеро/Radonjićko jezero) is a lake in Kosovo. After Gazivoda Lake, it is the second largest in the country at 5.62 km.

Back in the 80‘s, there used to be a town under this lake. However during the process of making this artificial lake, the town had to be sunk under it. The residents had, of course, moved from the town once this happened. During different times of the year, once the tide is low, the very top of a church can be seen, as it remains still intact. It is a widely known fact to the people around the lake. However not many visitors know the whole story of this lake.

In 1998, the lake was the site of the Lake Radonjić massacre.

• List of lakes of Kosovo

42°29′26″N 20°25′00″E / 42.4906°N 20.4167°E / 42.4906; 20.4167