Lake Mellan Fryken, Lake system in Värmland, Sweden.

Lake Mellan Fryken is a large body of water in Värmland in central Sweden, forming the middle link in a chain of three connected lakes. Forested shorelines frame the water, with several small settlements dotted around its edges.

Mellan-Fryken is the middle of the three Fryken lakes, which drain south through Nedre Fryken and the Norsälven river to Vänern. The lake receives most of its water from Övre Fryken through the Sundet strait at Sunne and from the Rottnan river at Rottneros in the northwest. Its catchment covers 3,820 square kilometres, of which 80 percent is forest and 7 percent water.

Sunne, at the northern end, is the main settlement on the lake, which narrows southward to a sound at Nilsby before reaching Nedre Fryken. The lake takes water from Övre Fryken through the Sundet channel at Sunne and from the Rottnan river at Rottneros in the northwest.

Mellan-Fryken runs north–south from Sunne down to the narrow strait at Nilsby, where it meets Nedre Fryken. It is fed mainly by Övre Fryken through the Sundet channel at Sunne and by the Rottnan river at Rottneros in the northwest. The lake lies in both Kils and Sunne municipalities, so boaters and anglers should check which municipality's rules apply on each shore.

At 135 metres deep, Mellan-Fryken is deeper than most Swedish lakes of its size, and its surface lies 62.1 metres above sea level. The lake drains south through Nedre Fryken and the Norsälven river to Vänern, 292 kilometres from the sea by water.