SW, sw and sometimes s/w may stand for: Geography · Southwest, one of the 4 ordinal directions, in weather forecasting and geography People · Min Ding Companies · Smith & Wesson · Southern Water, a water company of England · Southern Winds, an Argentine airline · the IATA code for Air Namibia · Southwest_Airlines, a U.S. airline Military · Surface Warfare, a designation fo Enlisted Surface Warfare Specialists · Superweapon Computing & Electronics · Semantic Web · Shareware · Shortwave · Software · Solid Works · Subwoofer Sport · Sand Wedge · Stampede Wrestling Language and Slang