To provide a thin-film magnetic head capable of enhancing an OW characteristic, while maintaining a satisfactory NLTS characteristic by improving the shape of the top end part of an upside core layer.

An upside core layer is constituted of a top end part C having a constant width size (track width), an intermediate part D which has an angle θ1 with respect to the side face of the top end part C and whose width size is broadened from the part C to the rear and a rear edge part E which has an angle θ2 with respect to the side face of the top end part C and which is formed extending from the intermediate part D to the rear. Thus, both the OW characteristic and the NLTS characteristics can be enhanced at the same time.