In a waterproof connector 10 having a housing main body 11 having a plurality of terminal receiving chambers 12, a fitting portion 15 formed in the housing main body 11 and fitted to a mating housing main body, and a protecting portion 23 formed in an opposite side to the fitting portion 15 of the housing main body 11 and protecting a plurality of tube-shaped electric wire inserting portions 16 extended from the terminal receiving chamber 12, there is provided a molding sink preventing section 24 formed between the protecting portion 23 and the electric wire inserting portion 16 and all around an outer periphery of the electric wire inserting portion 16, and preventing a molding sink from being generated in the electric wire inserting portion 16 at a time of molding.