The Koksoak River (French: rivière Koksoak) is a river in northern Quebec, Canada, the largest river in the Nunavik region. The Inuit village and region's administrative centre Kuujjuaq lies on the shores of the Koksoak, about 50 kilometres (31 mi) south from its mouth. Although hunting activities and administrative services are a mainstay of life in Kuujjuaq, adventure tourism is expanding, centred mostly on caribou hunting as well as salmon, trout and Arctic char fishing.