Cleaver Lake is a lake in Timiskaming District, Ontario, Canada. It is about 800 metres (2,625 ft) long and 150 metres (492 ft) wide, and lies at an elevation of 328 metres (1,076 ft) about 16 kilometres (10 mi) northwest of the community of Gowganda and about 21.7 kilometres (13.5 mi) southwest of Matachewan. The primary inflow and outflow is Cleaver Creek, which flows into the West Montreal River, a tributary of the Montreal River and part of the Ottawa River system.