Abstract: A container lid locking ring is provided to secure the lid of a container to the container and lock one container on top of another. The locking ring comprises a cylindrical ring having a first projection for engaging a recess in the lid of a first container and a second projection, having a finger-like projection, for locking about the rim bead of the container. The locking ring further comprises a seat on which an over disposed container may be placed and a third projection, having a finger-like projection, for locking about the bottom rim bead of the over disposed container. The locking ring may further comprise a fourth projection, providing added locking support and sealing capabilities. In the use of the locking ring, containers may have their lids securely locked onto the container and containers may be securely stacked one on top of another for transportation, storage and display.