A viewing device for a vehicle including: a supporting body provided at a vehicle body side; a pivoting body that is pivotably supported at the supporting body, with a gap being provided between the pivoting body and the supporting body in a radial direction of pivoting; a viewing instrument that is provided at the pivoting body, that facilitates viewing by a vehicle occupant, and that is folded in or folded out as a result of the pivoting body being pivoted to one side or to another side; and a restricting portion that is provided at one of the supporting body or the pivoting body, and that restricts communication between one side and another side of the gap, with the restriction of communication between the one side and the other side of the gap being released when the viewing instrument is folded in or folded out.