A recording medium cartridge that is housed in a library, extracted from the library by a gripping mechanism, and loaded into a drive device includes a case, within which is housed a recording medium, and a memory, in which is stored information relating to the recording medium and that is noncontactingly accessible by reading and writing devices disposed at the drive device and at the gripping mechanism. A communication surface of the memory is disposed within the case at an angle at which the memory is accessible from at least three directions.