A connector includes a housing having a cylindrical portion and terminal receptacle portions housed in the cylindrical portion for receiving a terminal, and a first seal member and a second seal member for sealing the terminal receptacle portions. The first seal member includes a first ring part fitted on a first terminal receptacle portion and a first extension portion formed so as to extend from the first ring part in a direction different than an arrangement direction of an adjacent second terminal receptacle portion. The second seal member includes a second ring part fitted on the second terminal receptacle portion, a third ring part fitted on a third terminal receptacle portion, and a second extension portion connecting the second ring part and the third ring part to each other and extending so as to overlap at least the first extension portion.