A wire harness includes a trunk line section including a power line for power supply as a wiring body wired in a vehicle, a distributor that is connected to the trunk line section and distributes electric power from a power supply mounted on the vehicle to an appliance to be connected, and a ground plate for grounding buried in a resin flooring material of the vehicle separately from the trunk line section. Thus, with the wire harness, a wiring path can be simplified by combining the trunk line section, the distributor, and the ground plate.