RS

RS has different meanings depending on the context:

Republika Srpska, one of the two political entities that compose the state of Bosnia and Herzegovina.
Abbreviation for Rio Grande do Sul, state in Southern Brazil
Radio Standard, an early prefix used for electronic standards (e.g. RS-232) now maintained by the Electronic Industries Alliance.
RadioShack
Remote Sensing, a group of techniques for monitoring of Earth, planets and terrestrial buildings (by light, IR and radio waves)
Religious studies, the science of major religions, rites and rituals.
Rally Sport, a designation used on cars that are rally class.
RS - A range motorcycles made by Aprilia including the RS50, RS125 & RS250
RS, a make/type of dinghy sailing boats, including the RS200, RS300, RS400, RS500, RS600, RS700, RS800, RS Vareo, RS Feva, RS K6, RS Vision & RS Elite.
Road switcher, a type of railroad locomotive.
Roberval and Saquenay Railway Template:Reporting mark
R/S statements, a system of hazard codes and phrases for labeling dangerous chemicals, see Risk and Safety Statements.
The record separator character in the C0 control code set.
Reed-Solomon error correction
Revolution System (Nintendo)
Re-Start, Often used in video games when a game room must be remade for any various reason.
Rival Schools, a 3d-fighting game series by Capcom.
RuneScape, a 3D Java based massive multiplayer online role-playing game (MMORPG).
RS components limited a major supplier of components in the united kingdom.