A chair includes a chair arm (20) coupled to a frame (22, 28) and a cup holder (24) mounted to chair arm (20) for movement between a retracted position lying underneath chair arm (20) to an opened position lying away from the underside of chair arm (20) to hold a cup (26) therein. Cup holder (24) includes first and second arms (40, 42) mounted for pivotable movement about a pivot axis (44) relative to chair arm (20) and one another. When moved to the opened position, first and second arms (40, 42) cooperate to define a circular cup-receiving opening therebetween. Cup holder (24) also includes an interlock (90) to guide relative movement of first and second arms (40, 42) as those arms are moved between retracted and opened positions.