Limestone Falls (French: '''Chute du Calcaire'''|links=no) is series of waterfalls on the Caniapiscau River in Nunavik, Quebec, Canada. The falls are both the largest and tallest of a series of waterfalls on the Caniapiscau River, which includes the smaller but equally powerful Pyrite Falls located about upstream.[1]
The flow of the falls has been regulated by the KA-3 Dam of the Caniapiscau Reservoir since its completion in 1985.