A cup holder has a case fixed to a conveyance, a tray for supporting the bottom of a container, and a pair of left and right holders. The case has an aperture open toward a passenger compartment. The tray is movably supported by the case, and can be pulled out from a storage position in the tray to a usage position, via the aperture. Each holder has an arm with a ring for supporting the side of the container. The arms are linked to the tray so as to be able to rotate horizontally. Each ring has an overlapping part that vertically overlaps with the other ring when the arms approach each other, and a non-overlapping part that does not overlap when the arms approach each other. The vertical-direction width of the overlapping parts is smaller than the width of the non-overlappng parts, thereby reducing the vertical-direction width of the case, making the holder suitable for installation in a conveyance having only limited usable space.