A joint connector (10) collectively connects wires to a body (B) of a vehicle. The joint connector (10) has a conductive plate (30) with a main body (31) including a plurality of terminals (32B) to be connected to female terminals at ends of the wires and to be bolt-fastened to the body (B). A housing (20) is arranged around the terminals (32B). The conductive plate (30) includes a coupling portion (32A) for coupling the terminals (32B) to each other, a bolt fastening portion (34) with a bolt hole (35) through which a ground bolt (B2) is to be inserted, a rotation preventing piece (33) at a side of the bolt fastening portion (34) opposite to the coupling (32A) to prevent rotation of the main body (31), and ribs continuous from the rotation preventing piece (33) to the coupling (32A) across the main body (31).