A wheel cover (30; 598) that covers at least a portion of an outside of a wheel, comprising: a cover main body (32; 350; 380; 410; 438; 501; 600; 720; 730; 750; 770; 780; 790; 830) that has an annular shape; and a cover attaching portion (34; 150; 190; 200; 230; 270; 300; 320; 358; 388; 414; 432; 450; 482; 602; 820) that attaches the cover main body to the wheel by being attached to the wheel on an inner peripheral side of the cover main body, wherein the cover attaching portion includes a) a plurality of engaging members (82; 162; 272; 306; 668), each of which has an engaging portion that selectively engages with an engagable portion of the wheel, the plurality of engaging members extending in a direction that includes a component of a direction parallel to an axis of the cover attaching portion, and b) an engaging member retaining portion that holds the plurality of engaging members to the cover attaching portion at the other end portion of each of the engaging members, in a state where the engaging portion of each of the engaging members is separated from the engagable portion of the wheel when force in a direction intersecting the axis is applied to one end portion of each of the plurality of engaging members, wherein the cover attaching portion further includes at least one guide member (78; 160; 304; 666) that extends in a direction parallel to the axis; the cover attaching portion is inserted into an insertion hole of the wheel provided along a center axis of the wheel; and characterized in that the at least one guide member includes a) a guide portion main body, and b) a force receiving portion (94; 163; 672) that is provided protruding radially outward on the guide portion main body, and that has an abutting surface that abuts against an inner peripheral surface of the insertion hole, when the cover attaching portion is inserted into the insertion hole; and in that the cover main body and the cover attaching portion are two distinct elements. a cover main body (32; 350; 380; 410; 438; 501; 600; 720; 730; 750; 770; 780; 790; 830) that has an annular shape; and a cover attaching portion (34; 150; 190; 200; 230; 270; 300; 320; 358; 388; 414; 432; 450; 482; 602; 820) that attaches the cover main body to the wheel by being attached to the wheel on an inner peripheral side of the cover main body, wherein the cover attaching portion includes a) a plurality of engaging members (82; 162; 272; 306; 668), each of which has an engaging portion that selectively engages with an engagable portion of the wheel, the plurality of engaging members extending in a direction that includes a component of a direction parallel to an axis of the cover attaching portion, and b) an engaging member retaining portion that holds the plurality of engaging members to the cover attaching portion at the other end portion of each of the engaging members, in a state where the engaging portion of each of the engaging members is separated from the engagable portion of the wheel when force in a direction intersecting the axis is applied to one end portion of each of the plurality of engaging members, wherein the cover attaching portion further includes at least one guide member (78; 160; 304; 666) that extends in a direction parallel to the axis; the cover attaching portion is inserted into an insertion hole of the wheel provided along a center axis of the wheel; and characterized in that the at least one guide member includes a) a guide portion main body, and b) a force receiving portion (94; 163; 672) that is provided protruding radially outward on the guide portion main body, and that has an abutting surface that abuts against an inner peripheral surface of the insertion hole, when the cover attaching portion is inserted into the insertion hole; and in that the cover main body and the cover attaching portion are two distinct elements.