A wire harness including: an electrical wire; and a fixing member that fixes the electrical wire to an attachment target, wherein: the fixing member has: a bolt fixing portion to be fixed to a bolt of the attachment target; and a holder that holds the electrical wire, the bolt fixing portion includes: a side surface that opposes the attachment target; a bolt insertion opening provided in the side surface and into which the bolt is to be inserted; an engagement that engages, in an axial direction, the bolt inserted into the bolt fixing portion through the bolt insertion opening; and a biasing part that is provided on the side surface and comes into contact with the attachment target.