Vibration damping device

A vibration damping device in which a first mounting member and a second mounting member are connected by a main rubber elastic body, and a separate stopper member is accommodated in an accommodation recess that opens in an axial direction in an inner circumference of a tubular part of the second mounting member, wherein

• a retaining part that protrudes toward an inner circumference is provided at an opening of the accommodation recess,
• an outer shape of the stopper member is substantially quadrilateral, and lip-shaped parts that protrude from corner portions toward an outer circumference are provided at the stopper member,
• the lip-shaped part is located further inward than the retaining part in the accommodation recess, and the lip-shaped part overlaps the retaining part in axial projection,
• a rod insertion hole through which a rod member fixed to the first mounting member is inserted is formed through the stopper member in the axial direction, and
• a pair of facing side portions located on both sides in a direction perpendicular to an axis on an outer circumferential surface of the stopper member are spaced apart from an inner circumferential surface of the accommodation recess toward an inner circumference in a region extending to both outer sides of the rod insertion hole between the lip-shaped parts.