Stephen Hugh Salter, MBE, FRSE (born 7 December 1938) is Emeritus Professor of Engineering Design at the University of Edinburgh and inventor of the eponymous Salter duck wave energy device. Salter is also a proponent of geoengineering and is responsible for creating the concept of the mechanical enhancement of clouds to achieve cloud reflectivity enhancement. Salter is a Specialist Advisor at wave energy company Aquamarine Power advising on the development of the Oyster wave energy converter. Salter "has been one of the leading voices" of the marine cloud brightening movement.