A cord stopper has a socket having a pair of opposed through holes formed through opposed sides thereof and a plug having a passage formed therethrough. The plug is reciprocally movable through the socket between a pulled-out position where the through holes and the passage are in alignment with each other and a depressed position where the cord is clamped between the edges of the through holes and the through aperture. The cord stopper further includes a device for locking the plug in its depressed position within the socket.
