Abstract: A self-closing container top adapted to be used in conjunction with a container having an upper rim defining an opening. The invention includes two generally horizontal top panels supportively held for rotation about opposing coaxial mounting shafts each having a horizontal axis therethrough. These top panels are arranged in opposing side-by-side arrangement wherein their center margins form a common parting line. Each axis of top panel rotation is positioned between the center margin and the outer panel margin such that self-righting means returns the top panels to a generally horizontal closed position over the container opening and against stops. The stops prevent the panels from rotating beyond a point where the top panel center margins, moving upwardly, begin to diverge. The self-righting means may be a counterweight connected near or at each outer margin, or spring bias means mounted about at least one mounting shaft.