Abstract: The wire harness includes a sheathing member that is formed in a sheet shape, at least one electric wire that is arranged on a first principal surface side of the sheathing member, and a sewing thread that sews the electric wire to the sheathing member. A partial region of the sheathing member that is arranged along an extension direction of the electric wire is in a flat state, while another at least partial region of the sheathing member that is arranged along the extension direction of the electric wire is curved in a direction intersecting with the extension direction of the electric wire.