Abstract: A vibration-damping holding device for holding at least one pipeline having a holding body of a hard-elastic material and a receiving body of a soft-elastic material insertable into said holding body, the holding body having a lower part adapted to be anchored to a carrier plate, an upper part and resilient locking hooks for releasably connecting them to one another in a closed position, the upper and lower parts forming a cavity between them in the closed position for receiving the receiving body. The receiving body also has two parts that can be assembled together to form the body, each of the parts having an outer shell with an outer shape compatible with the cavity in the holding body and at least one semi-annular inner shell that cooperate as a pair with each other to hold a pipeline.