Lake Leynar[1][2] (Faroese: Leynavatn) is a lake on the island of Streymoy in the Faroe Islands.

Lake Leynar is the sixth-largest natural lake in the Faroe Islands and it measures 0.18 square kilometers (0.069 sq mi).

[3] It lies at an elevation of 63 meters (207 ft).

[4] The valley and its contents is administered by the National Trust.

[5] The lakeside is the location for the KOKS restaurant.