RAILROAD WHEEL WITH BRAKE DISC

A railway wheel includes: a wheel (10) including a plate portion (13); and a brake disc (1) including a circular plate portion (2) whose front face (2a) side is a sliding surface, and a plurality of fin portions (3) which are radially projected on a back face (2b) of the circular plate portion (2), wherein two of the brake discs (1) interpose the plate portion (13) of the wheel (10) with each of sliding surfaces thereof facing outwardly, and are fastened in a region within the sliding surface. Regarding an area of a section crossing a space formed between the brake disc (1) and the wheel (10) along a circumferential direction, a minimum section portion in which the sectional area is minimum is present closest to the back face (2b) within the outer peripheral surface (2c) of the circular plate portion (2) within a region formed by an outer peripheral surface (2c) of the circular plate portion (2) and an inner peripheral surface (12b) of the rim portion (12), and an area of the minimum section portion is not less than 2500 mm 2 and not more than 7000 mm 2 . The brake disc (1) can suppress aerodynamic sound during high speed travelling, and has a simple shape and excellent productivity.