A band clamp including: a band portion which is wound around a member to be bundled; a lock portion to which a base end of the band portion is connected; engaging projections which are formed in the band portion along a direction of length of the band portion at predetermined intervals; an insertion path through which an end of the band portion is passed; a lock claw that is disposed in the insertion path and that engages with the engaging projection of the band portion; and ribs extending along both sides of the band portion from a connection part of the band portion in a direction in which the band portion extends, wherein: the lock portion has the insertion path and the lock claw; and the ribs are formed on a clamp face of the lock portion, against which the member to be bundled abuts.