Disclosed are apparatus and method for delivering oxygen from an oxygen supply to a person in a convenient, sanitary and organized manner. The oxygen delivery system includes a rail attached to a surface of the room and a sliding trolley attached to the rail. An oxygen supply tube is attached to the oxygen supply and the trolley for transferring oxygen from the oxygen supply to the trolley. The system enables the person to move to various locations in the room while receiving oxygen from the oxygen supply through the oxygen supply tube, the trolley, a drop tube and a nasal cannula, or other breathing device connected to the trolley. The person may guide the trolley around the room by pulling the drop tube in the desired direction of travel.