A connector includes a housing configured to accommodate a connection terminal, a shutter that is rotatably provided in the housing and is configured to open and close a front opening of the housing, a rotation arm that is rotatably supported to the housing about a rotation axis and has an arm portion and a connection engagement portion, and a connection member that is provided so as to be rotatable together with the shutter and includes a first lever portion that is pressed and rotated by a tip end of the connection engagement portion. A pressing force of the mating connector acts on the arm portion so as to rotate the rotation arm, and thus the shutter is rotated together with the connection member rotated by the connection engagement portion so as to open the front opening.