WIRING MEMBER

An object is to provide a technique capable of simply fixing a wire-like transmission member to a sheet regardless of a type of the wire-like transmission member. A wiring member includes a sheet, a holding member fixed to the sheet, and a first wire-like transmission member held by the holding member. The bolding member includes a holding part in which a groove and a protrusion narrowing a width dimension of an opening part of the groove are formed. The first wire-like transmission member is housed in the groove.