A grommet includes a grommet body, an inner protector, and an outer member. The inner protector includes a protector body accommodated in a protector accommodating chamber of the grommet body. The protector body includes a rib on an outer surface of the protector body. The rib projects toward an inner surface of the protector accommodating chamber of the grommet body and extends along a direction toward a lower side from an upper side with the grommet installed in a vehicle body.