A bearing device for a vehicle wheel, comprising: an outer member having a multi-row outer raceway surface on an inner periphery; an inner member having, on an outer periphery, a multi-row inner raceway surface facing the multi-row outer raceway surface; and a plurality of tapered rollers rollably accommodated between the outer raceway surface and the inner raceway surface, each of the tapered rollers having a large diameter-side end surface formed in a convex shape having a predetermined radius of curvature, the inner raceway surface having a large flange part integrally formed with the inner raceway surface, the large flange part having a guide surface having a conical surface shape, the guide surface being in point contact with the large diameter-side end surface in a slidable manner to guide each of the tapered rollers, wherein the large flange part includes a chamfered part continuous with an outside surface of the large flange part, and a rounded part formed in an arc shape having a predetermined radius of curvature in a cross-sectional view, the rounded part being continuous with the chamfered part on one side in a radial direction and continuous with the guide surface on another side in the radial direction, the large flange part has a large flange part-side cutout part formed at a base of the large flange part, the large flange part-side cutout part being continuous with the guide surface, the large diameter-side end surface of each of the tapered rollers has a tapered roller-side cutout part having a circular shape formed coaxially with the large diameter-side end surface, and a clearance between the large diameter-side end surface and the guide surface as viewed from a contact point between the large diameter-side end surface and the guide surface is greater than or equal to 15 μm, wherein, under the allowable maximum axial load of the bearing device for a vehicle wheel, when a minor axis radius of a contact ellipse obtained by the point contact between the large diameter-side end surface and the guide surface is denoted by Ri, and a shortest length from the contact point between the large diameter-side end surface and the guide surface to a boundary position between the rounded part and the guide surface is denoted as X1, X1 ≥ 2 × Ri is satisfied, and when a shortest length from the contact point between the large diameter-side end surface and the guide surface to a boundary position between the large flange part-side cutout part and the guide surface is denoted as X2, X2 > Ri is satisfied. an outer member having a multi-row outer raceway surface on an inner periphery; an inner member having, on an outer periphery, a multi-row inner raceway surface facing the multi-row outer raceway surface; and a plurality of tapered rollers rollably accommodated between the outer raceway surface and the inner raceway surface, each of the tapered rollers having a large diameter-side end surface formed in a convex shape having a predetermined radius of curvature, the inner raceway surface having a large flange part integrally formed with the inner raceway surface, the large flange part having a guide surface having a conical surface shape, the guide surface being in point contact with the large diameter-side end surface in a slidable manner to guide each of the tapered rollers, wherein the large flange part includes a chamfered part continuous with an outside surface of the large flange part, and a rounded part formed in an arc shape having a predetermined radius of curvature in a cross-sectional view, the rounded part being continuous with the chamfered part on one side in a radial direction and continuous with the guide surface on another side in the radial direction, the large flange part has a large flange part-side cutout part formed at a base of the large flange part, the large flange part-side cutout part being continuous with the guide surface, the large diameter-side end surface of each of the tapered rollers has a tapered roller-side cutout part having a circular shape formed coaxially with the large diameter-side end surface, and a clearance between the large diameter-side end surface and the guide surface as viewed from a contact point between the large diameter-side end surface and the guide surface is greater than or equal to 15 μm, wherein, under the allowable maximum axial load of the bearing device for a vehicle wheel, when a minor axis radius of a contact ellipse obtained by the point contact between the large diameter-side end surface and the guide surface is denoted by Ri, and a shortest length from the contact point between the large diameter-side end surface and the guide surface to a boundary position between the rounded part and the guide surface is denoted as X1, X1 ≥ 2 × Ri is satisfied, and when a shortest length from the contact point between the large diameter-side end surface and the guide surface to a boundary position between the large flange part-side cutout part and the guide surface is denoted as X2, X2 > Ri is satisfied.