The river Ciril also spelled Kiril, was counted as third of the Seven Rivers of Gondor.
It arose in an isolated peak south of the White Mountains in the north of the Gondorian region of Lamedon, and flowed south past the township of Calembel until it met the river Ringló, and as part of that river flowed towards Edhellond.
On 9 March T.A. 3019 Aragorn led Gimli, Legolas, the Grey Company, and the Oathbreakers across the Ciril on the way to Pelargir.