A balloon catheter including an elongated catheter main body portion and a balloon provided on the distal portion of the catheter main body portion. The balloon is inflatable to expand radially outward into an inflated state and deflatable to contract radially inward into a deflated state. The catheter main body portion includes a hollow outer tube and a hollow inner tube disposed within the outer tube. The balloon includes a contact portion that contacts the outer surface of the inner tube and a vane portion protruding from the contact portion radially outward when the balloon is in the deflated state. The contact portion of the balloon includes a connecting portion that connects the balloon to the catheter main body portion.
