The present invention provides a rubber stopper that can set a shape suitable for mounting and set a desired stopper characteristic. Specifically, a holding fitting 3 fastened to one member by means of bolting is provided. A rubber section 4 that abuts against the other member is held by the holding fitting 3. The holding fitting 3 has a partition wall 8 to divide between a peripheral edge of a bolt hole 7 and a holding section 9 that holds the rubber section 4. A rubber side abutment surface 12 in the rubber section 4 protrudes from a top of the partition wall 8. A bored section 13 is formed near the partition wall 8 of the rubber section 4. The bored section 13 increases durability of the rubber section 4. A size of the rubber stopper 1 is reduced.