Organ stop
（重定向自Claribella）
![The choir division of the organ at St. Raphael's Cathedral, Dubuque, Iowa. Shown here are several ranks of pipes, each of which would be controlled from one of the stops on the console.](/Images/godic/202501/04/StRaphaelsDubOrganSmall2204.jpg")
![Stop tabs on an electronic organ, located above the uppermost manual. Compare this placement to that of the stop knobs on the pipe organ console pictured below.](/Images/godic/202501/04/Estops2204.jpg")
![The organ at the Naval Academy Chapel has 522 stops.](/Images/godic/202501/04/Usnaconsole22204.jpg")
![](/Images/godic/202501/04/Organ_keyboard_unision_pitch_layout2204.png")
An organ stop (or just stop) is a component of a pipe organ that admits pressurized air (known as wind) to a set of organ pipes. Its name comes from the fact that stops can be used selectively by the organist; some can be "on" (admitting the passage of air to certain pipes), while others can be "off" (stopping the passage of air to certain pipes).