The present invention provides a brake disc having a corrugated outer periphery capable of effectively preventing brake judder. A brake disc having a corrugated outer periphery (1) comprising a hub disc (4) fixed to a wheel, a braking disc (3) coaxially disposed outside the hub disc (4), and a connection pin (5) connecting the hub disc (4) and the braking disc (3) with each other in a floating state, in which a plurality of outer peripheral recesses (7) are formed in an outer periphery of the braking disc (3) at a distance from one another in a circumferential direction to form the outer periphery into a corrugated shape, wherein depths (d) of the outer peripheral recesses (7) from an outer peripheral circle (C) of the braking disc (3) are set shallow. The depth (d) of the outer peripheral recesses (7) is set to 7 mm or less.