Abstract: A spring loaded adjustable cup dispenser featuring a tubular design with an open end and at least one adjustable cup retaining member disposed therein. After being installed in a counter or cabinet having a flat surface, the adjustable retaining members of the dispenser are accessible through the open end. Once accessed, the retaining members may be radially adjusted from a setting enabling the dispenser to house and dispense cups of a particular size to house and dispense cups of a different size. A cup retaining member is further provided. The retaining member features a first and second end connected together by an elongated body. The retaining member additionally features a rounded edge between the second end and the elongated body which is adapted to engage the lip of the uppermost cup in a dispenser in a manner which enables the cups to be readily dispensed one at a time.