To provide a guide wire capable of preventing breakage of the coil body or the core shaft when the guide wire is bent.A guide wire 1 of the invention includes a core shaft 100 that includes a distal end portion PI stepwisely reducing in diameter, an inner coil body 200 that covers at least a part of an outer periphery of the distal end portion PI, an outer coil body 300 that covers an outer periphery of the inner coil body 200, and a distal end fixing portion 400 that fixes distal ends of the core shaft 100, and the like, in which the distal end portion PI includes a small diameter portion 110, a large diameter portion 120 that is positioned inside the inner coil body 200 and the outer coil body 200 in the proximal end direction than the small diameter portion 110 and has a larger outer diameter than the small diameter portion 110, and a tapered portion 130 that increases in diameter from the small diameter portion 110 toward the large diameter portion 120, in which a marker part 500 containing a radiopaque substance m is formed on an outer peripheral surface of the tapered portion 130, and a gap P2 is provided between the marker part 500 and the inner coil body 200.
