Abstract: The rotary hydrotherapy nozzle is a cylindrical tube forming a nozzle with a hand grip sleeve on a first stage tube and having an on-off valve. The tube has a rotary element contained in a discharge end which has multiple discharge ports. The tube intake end is threaded to receive the first stage tube or a water hose. The rotary element is a cylindrical body shaped to rotate in the discharge end. The rotary element has an outlet end with an outlet port shaped to alternately inhibit and allow water flow through the discharge ports as rotation occurs. The rotary element inlet end has a water vane which causes rotation due to the water flow impact thereon from the water inlet disk which has skewed ducts to direct water flow against the blades of the water vane.