A dust cover that allows a dust lip part thereof to offer sealing performance stably for a long period of time. A sealing part 130 includes an inner peripheral sealing part that can slide relative to an outer peripheral surface of a shaft part, and a dust lip part 132 that can slide relative to an end surface of a knuckle 400, wherein an annular protrusion 135 that protrudes radially outward is formed at an end of the sealing part 130 on the other end side, and at least one of inner and outer peripheral surfaces of the dust lip part 132 extends toward the other end side from recessed parts 132a and 132b of the sealing part 130 being recessed toward one end side with respect to an end surface 135a of the annular protrusion 135 on the other end side.