A connector, comprising: a housing main body that includes a housing space part for housing a terminal along an axial direction, and an insertion port that is provided at one side of the housing space part in the axial direction and into which a counterpart terminal configured to be connected to the terminal is inserted; a lance that faces the housing space part, that is elastically deformable supported by the housing main body in a cantilever manner, that extends toward a side of the insertion port along the axial direction, and that engages the terminal housed in the housing space part, the lance including an engagement part to be engaged with the terminal; and a regulating contact part that comes into contact with the lance and that regulates excessive displacement of the lance toward a side of the housing space part; wherein in the housing main body the regulating contact part is formed on a communication portion between a wide part of a notch part and the insertion port; the lance includes a rib part that comes into contact with the regulating contact part on an end part at the side of the insertion port in the axial direction; the regulating contact part is formed as a flat surface that extends along a width direction which is perpendicular to the axial direction and to a height direction towards the lance, and that faces the rib part side in the height direction towards the lance; two of the regulating contact parts are provided on both sides of the communication portion in the width direction; and by providing a step-shaped portion at both sides of the communication portion in the width direction each of the regulating contact parts is formed as a receiving surface for receiving the rib part; characterized in that each of the regulating contact parts comes into contact with the lance at the side of the insertion port with respect to the engagement part in the axial direction. a housing main body that includes a housing space part for housing a terminal along an axial direction, and an insertion port that is provided at one side of the housing space part in the axial direction and into which a counterpart terminal configured to be connected to the terminal is inserted; a lance that faces the housing space part, that is elastically deformable supported by the housing main body in a cantilever manner, that extends toward a side of the insertion port along the axial direction, and that engages the terminal housed in the housing space part, the lance including an engagement part to be engaged with the terminal; and a regulating contact part that comes into contact with the lance and that regulates excessive displacement of the lance toward a side of the housing space part; wherein in the housing main body the regulating contact part is formed on a communication portion between a wide part of a notch part and the insertion port; the lance includes a rib part that comes into contact with the regulating contact part on an end part at the side of the insertion port in the axial direction; the regulating contact part is formed as a flat surface that extends along a width direction which is perpendicular to the axial direction and to a height direction towards the lance, and that faces the rib part side in the height direction towards the lance; two of the regulating contact parts are provided on both sides of the communication portion in the width direction; and by providing a step-shaped portion at both sides of the communication portion in the width direction each of the regulating contact parts is formed as a receiving surface for receiving the rib part; characterized in that each of the regulating contact parts comes into contact with the lance at the side of the insertion port with respect to the engagement part in the axial direction.