Abstract: A drawer interlock apparatus for multiple drawers having at least one drawer locking cam for each drawer, which is pivotally movable between open and closed positions, a drawer pin on each drawer interengageable with the cam, when in the closed position, and being releaseable from the cam in the open position to permit the drawer to be opened, linkage connecting the cam with the next adjacent cam of a next adjacent drawer, such linkage being responsive to opening movement of said first mentioned cam, to prevent opening movement of the second mentioned cam.