A bearing device 1 for a vehicle wheel, wherein an annular weir part 20 is provided on the outer periphery of an outer-side end part of an outer member 2, the annular weir part 20 having the rotation axis L of an inner member 3 as a center, the weir part 20 having a shape that is asymmetrical between the upper side Us and the lower side Ls of the outer member 2, and the weir part 20 being inclined farther toward the inner side the more a weir wall surface 20a faces outward in the radial direction in a part or all of the upper side Us. Also, the weir part 20 is inclined farther toward the outer side the more the weir wall surface 20a faces outward in the radial direction in a part or all of the lower side Ls.