A connector includes a terminal, a housing to accommodate the terminal and a retainer including a locking portion to lock the terminal when the terminal is accommodated in the housing. The housing includes a front housing having a terminal accommodating chamber and a rear housing to be attached to the front housing from a rear side of an insertion direction of the terminal, the rear housing including a lance to, when the terminal is accommodated in the terminal accommodating chamber, lock a rear portion of the terminal. The retainer is to be attached between the front housing and the rear housing and to be displaceable along a direction perpendicular to the insertion direction between a locking position and a non-locking position. The retainer moves from the non-locking position to the locking portion and the locking portion locks the rear portion of the terminal in the insertion direction.