A long object guide device includes an articulated support member, which includes link members arranged in series. Adjacent ones of the link members are rotationally coupled to each other. The articulated support member is permitted to turn to a predetermined bending radius in a first direction that intersects a series arrangement direction. The articulated support member is restricted from turning in a second direction that is opposite to the first direction. The long object guide device guides flexible covered wires while protecting the covered wires. The guide device includes an end. The guide device includes a fixation member that is fixable to a counterpart member while coupled to one of the link members that corresponds to the end of the guide device.