The present disclosure aims to provide a connector capable of suppressing an increase in the number of components. A retainer 50 includes a body portion 51 having a plurality of through holes through which a plurality of wires 20 are individually passed, and a plurality of holding portions 53 projecting from the body portion 51 to individually hold the plurality of wires 20. Each of the plurality of holding portions 53 includes a resilient piece 54 resiliently deformable in a second direction intersecting a first direction in which the holding portion 53 projects. A supporting member 60 is collectively mounted on outer peripheral surfaces of the plurality of holding portions 53. The supporting member 60 presses the resilient pieces 54 against outer peripheral surfaces of the wires 20.