To hardly cause feeding failures by storing an ink ribbon in a cartridge case in a balanced manner.

An ink ribbon cartridge includes: the cartridge case which has two arm parts; the ink ribbon which is meanderingly stored in the cartridge case and stretched between the arm parts, in such a manner that the ink ribbon is pulled out from one arm part of the two arm parts and drawn into the cartridge case from the other arm part of the two arm parts; and ribbon feeding members on a driving side and on a driven side, which are provided in the cartridge case so as to hold the ink ribbon, and feed the ink ribbon by rotation. In the ink ribbon cartridge, the ribbon feeding members on the driving side and on the driven side are formed into a cam shape and mounted so as to be rotated without being separated from each other, and thereby the movement direction of the ink ribbon after passing through the ribbon feeding members is alternately changed on the driving side and on the driven side.