To provide a bearing device for a wheel capable of improving durability while suppressing an increase in mass.

The bearing device 1 for a wheel comprises an outward member 4 having double row raceway surfaces 4a on the inner periphery, an inward member 11 having raceways 2a opposing the double row raceway surfaces 4a, and double row rolling elements 5 interposed between the opposing raceway surfaces 2a, 4a. The inward member 11 is provided with a hub wheel 2 having a hub flange 12 for mounting the wheel on the outer periphery. A plurality of reinforcing ribs 13a extending radially are provided to the side face of the counter-wheel mounting side of the hub flange 12.