Abstract: This invention relates to an improved audiocassette storage container adapted to storing one to four audiocassettes in positively restrained relation. The rectangularly-shaped hollow container is preferably formed of plastic material having twin pairs of mounting post members formed integrally on the interior surfaces of both its bottom and top walls in parallel spaced-apart relation. The pairs of mounting post members are spaced apart laterally when the container is closed so that the extremities of the post members may physically contact an adjacent facing cassette for its firm retention. The posts are offset from facing pairs having a vertical dimension greater than the cassette thickness for prevention of both tape unwinding and shifting movement of cassettes in facing arrangement. The facing pair of posts is sufficiently long to contact an oppositely-disposed cassette side surface to prevent axial movement of such cassette on its mounting posts and any lateral movement.