Kojle - is a lake in Suwałki Region, Podlaskie Voivodeship, north-eastern Poland. It is situated in the Suwaki Landscape Park. Oval-shaped lake with numerous bays on the south side. Lake with a muddy bottom and overgrown by rushes. It is 15 ha large, 0,65 km long, 0,40 km wide and 0,33 km deep. Kojle is connected to the lake Perty. These two lakes are one of the most beautiful in Suwałki Lake Area.