Abstract: A file-cabinet anti-tip device allows only one drawer to be withdrawn from a cabinet at a time. The device maintains cabinet-mounted drawer latches in drawer-unlocked positions when all of the drawers in the cabinet are closed, but moves the latches of the remaining drawers to drawer-locked positions in response to any one of the drawers being withdrawn from the cabinet. An actuating means includes a cabinet-mounted movable lock rod which is linked to the drawer latches, drawer-mounted cams and cabinet-mounted movable levers to move the lock rod in response to movement of the cams. The device of this invention can be easily integrated with conventional push-button-type file-cabinet locking mechanisms as well as combination-type locking mechanisms.