The purpose of the present invention is to provide a balloon catheter that makes it possible to reduce the bulkiness of a balloon during balloon contraction without worsening the expansion/contraction speed of the balloon. The present invention provides a balloon catheter that comprises: an outer cylindrical shaft； a grip member； a seal member that maintains liquid tightness； an inner cylindrical shaft； a tube that has a Rockwell hardness of at least R115, a flexural modulus of elasticity of 3.0–4.5 GPa, and a thickness of 0.06–0.12 mm； a push-in member； a slip-out prevention member； and a balloon that comprises an elastic material. The tube is fitted onto the inner cylindrical shaft in an area that does not include a balloon connection part.
