A library apparatus includes a storage section having a lock hole in which a lock member provided on a cartridge is capable of being fitted, the storage section storing the cartridge in a locked state when the lock member is fitted in the lock hole, a holding portion that holds the cartridge and engages with the lock member, an arm that supports the holding portion at an end of the arm, the arm inserting and extracting the cartridge held by the holding portion into and from the storage section, a first motor that moves the arm in an insertion-extraction direction in which the cartridge is inserted and extracted, and a second motor that moves the holding portion so as to move the lock member to a position at which the lock member is released from the lock hole.