To provide a technique for enabling a single exterior member to be easily used for both a region of a wire harness that is disposed in a flat state and a region thereof that is disposed in a bent state. The wire harness includes an exterior member formed in a sheet shape, and a wire disposed overlapping the exterior member in at least a partial region extending along an extension direction of the wire. At least a part of a portion where an insulating covering of the wire and the exterior member overlap is welded. A partial region of the exterior member that extends along the extension direction of the wire is in a flat state, and at least another partial region of the exterior member that extends along the extension direction of the wire is rolled up in a direction intersecting the extension direction of the wire.