A wire harness includes electric wires, and an electromagnetic wave suppression member provided at a periphery of the electric wires. The electromagnetic wave suppression member includes a restriction member and an annular magnetic core. The restriction member is provided so as to cover an outer periphery of the electric wires and includes an inner wall section that is harder than the electric wires. The magnetic core includes a nanocrystalline soft magnetic material and is provided at a periphery of the inner wall section.