Atton Lake is a spring fed, closed basin lake on the western side of the Canadian province of Saskatchewan. The lake is north-east of the town of Cut Knife, south-east of Paynton, and directly east of Poundmaker Indian reserve in the RM of Cut Knife No. 439. The confluence of Cut Knife Creek and Battle River is to the north-west. Access to the lake and associated park is from Highway 40, east of Cut Knife.