An ink ribbon cassette includes a supply bobbin around which an ink ribbon is wound, a take-up bobbin around which the ink ribbon fed from the supply bobbin is wound, and a case in which the supply bobbin and the take-up bobbin are rotatably held. The case includes a contact portion that bends a path along which the ink ribbon is transported by coming into contact with the ink ribbon. The contact portion that has come into contact with the ink ribbon is movable as a result of receiving a tension in the ink ribbon.