Abstract: A tape cassette holder for use with automobile and home tape systems includes a base and a plurality of partitioning members dimensioned to define channels therebetween which slideably engage the surface trapezoidal enlargements of a tape cassette inserted into the channel, in a manner which allows the cassette to move lengthwise but effectively prevents movement laterally or in a direction normal to the base. In the preferred embodiment, the tape cassette holder has backstopping means and resilient locking means for restraining lengthwise movement as well, whereby the cassette is held firmly in place regardless of the orientation of the holder, the cassettes being removable by application of sufficient force to overcome the resilient locking means.