a bathtub cushion for configured to be disposed within a bathtub at least partially filled with a liquid for providing comfort and support to a user superposed thereon . the bathtub cushion includes a plurality of integrated sections with at least one of the sections being non - buoyant to substantially inhibit the section from floating . the sections further include three layers with one layer being comprised of a non - buoyant gel . the bathtub cushion further includes a plurality of suction cups for releasably securing the bathtub cushion within a bathtub . additionally provided is a lumbar support pad for supporting the lumbar region of a user superposed on the bathtub cushion .