Inconel 718 is widely used in aerospace, nuclear power and gas turbine industries. On the other side, it is well known as one of the most difficult-to-cut super alloy and its efficient machining assumes a lot of importance. Therefore, this paper presents an experimental investigation on the cutting force of Inconel 718 machined with several different kinds of cutting tools. Both single-factor and orthogonal experiments were carried out with cemented carbide, cermet and CBN tools. The effects of cutting tools and cutting parameters on the cutting force are investigated and the optimal cutting conditions are recommended.