Abstract: An automatic cassette changer for a tape player. Tape cassettes are inserted into the holding members through the entrances of the holding members. The tape cassettes inserted in a horizontal position are held by holding members which are supported by a supporting member. The holding members are disposed in vertically stacked relation with a clearance therebetween. An extracting mechanism extracts one of the holding members from the supporting member rearwardly into the tape player. An elevating mechanism carries the extracting mechanism to a holding member which contains a desired tape cassette therein. The elevating mechanism loads the desired tape cassette extracted by the extracting mechanism from the holding member into a tape driving mechanism.