WIRING MEMBER

A wiring member includes: at least one wiring body including a sheet and a wire-like transmission member fixed to the sheet; and a regulation member including a housing part and a retaining piece and attached to the wiring body. The housing part includes a bottom part and two sidewall parts protruding from the bottom part. The wiring body is housed in the housing part while both end portions along a width direction are bended with respect to an intermediate portion and extend toward a tip end portion of each of the two sidewall parts. The retaining piece protrudes above the housing part from the tip end portion of each of the two sidewall parts to press the end portions of the wiring body.