An object of the present invention is to provide a balloon catheter that has excellent pushability upon insertion into a blood vessel, and in which kinking of an outer shaft on the rear end side of a position where a guide wire port is formed can be reliably prevented, and that can be smoothly inserted even into a curved blood vessel. The balloon catheter of the present invention includes an outer shaft (10) composed of a resin tube, a balloon (30), a hub (60), an inner tube (40) and a core wire (50). The rear end side of the straight portion (51) of the core wire (50) is fixed to the inner peripheral surface of the outer shaft (10) on the rear end side of the position where a guide wire port is formed, and the distal end side of the straight portion (51) of the core wire (50) is press-fitted between the inner peripheral surface of the outer shaft (10) and the outer peripheral surface of the inner tube (40).
