RSL may refer to: Military Reserve static line, in skydiving Returned and Services League of Australia, current name (since 1990) of a defence forces veterans organisation Returned Sailors' and Soldiers' Imperial League of Australia (1916–1940) Returned Sailors' Soldiers' and Airmen's Imperial League of Australia (1940–1965) Returned Services League of Australia (1965–1990) Sports Real Salt Lake, a US soccer club Royal Standard de Liège, a Belgian association football club Reserve static line in skydiving Rugby Super League (United States), a rugby union organization Russian Superleague, a now defunct hockey league in Russia Roshn Saudi League (RSL for short) is the name of the Saudi Professional League for sponsorship reasons. Technology RAISE Specification Language, a formal approach to software development RenderMan Shading Language, a language from the RenderMan Interface Specification used for writing shaders Restricted Service Licence, British limited time low power radio or television broadcasting Received Signal Level, signal strength of data transmitted via radio waves Other uses Radcliffe Science Library, Oxford University Raid: Shadow Legends, 2018 mobile game by Plarium Games Recurrent slope lineae, surface features on Mars Registered Social Landlord, a British independent public housing organization Relative sea level, the distance from the ocean floor to its surface Rennellese Sign Language, an extinct form of home sign documented from Rennell Island in 1974 Revolutionary Socialist League (disambiguation), the name of several political groups Royal Society of Literature, the senior literary organisation in Britain Russian Sign Language, a sign language used by the deaf community in Russia Russian State Library, the national library of Russia See also RLS (disambiguation)