A guide wire (1A) includes a core shaft (2) and a coil body (3) that covers at least a distal end portion of the core shaft (2). Along a center line (L1) in a long-axis direction of the core shaft (2), the distal end portion of the core shaft (2) has, in a state prior to mounting thereof and the core shaft (2) to each other, a first curvature (X1) with respect to a proximal end of the core shaft (2). Along a center line in a long-axis direction of the coil body (3), at least a distal end portion of the coil body (3) has, in a state prior to mounting thereof and the coil body (3) to each other, a second curvature (X2) with respect to a proximal end of the coil body (3). When the core shaft (2) and the coil body (3) are mounted to each other, a distal end portion (k) of the guide wire (1A) has, along a center line in a long-axis direction of the guide wire (1A), a third curvature (X3) with respect to a proximal end of the guide wire (1A).
