It is aimed to provide a connector of a novel structure capable of suppressing or preventing the transmission of the swing of a wire to a terminal in a connector. A connector 10 is provided with a housing 16 for accommodating a terminal 12, a back retainer 20 mounted in a rear end part of the housing 16 from which a wire 18 connected to the terminal 12 is pulled out, a wire insertion hole 62 provided in the back retainer 20, and a wire holding piece 72 projecting in a pull-out direction of the wire 18 from a peripheral edge part of the wire insertion hole 62. The wire 18 pulled out from the wire insertion hole 62 is tied and fixed to the wire holding piece 72 by a tying tool 82.