CONNECTOR

It is aimed to provide a connector capable of suppressing the separation of a retainer from a housing. A connector 10 is provided with a housing 20 including a plurality of tubular inserting portions 21 arranged in parallel to each other, a plurality of wires 100 being individually inserted into the inserting portions, sealing members 30 for sealing between the wires 100 and the inserting portions 21, and a retainer 40 to be locked to the housing 20, the retainer 40 retaining the sealing members 30. Recessed portions 25 are provided between two inserting portions 21 adjacent to each other on an outer peripheral surface of the housing 20. The retainer 40 includes locking portions 43 to be locked to the recessed portions 25 by concavo-convex engagement.