SW

SW, sw or s/w may stand for:

• Air Namibia, IATA airline code
• Sierra Wireless, Inc., TSX
• Silk Way Airlines, an Azerbaijani private cargo airline
• Slimming World, a weight loss company
• Smith & Wesson, S&W, a firearms manufacturer
• Southern Winds Airlines, a defunct Argentine airline
• Southwestern Company, a publishing company designed for college students

• Southwest, one of the four intercardinal directions
• Sweden (FIPS country code SW)
• SW postcode area, southwest London, England
• Schweinfurt, Bavaria, Germany, vehicle registration code
• Swietochlowice, Silesian Voivodeship, Poland, vehicle registration code

• Steelworker (US Navy), an occupational rating
• Enlisted Surface Warfare Specialist, a US Navy occupational rating
• Sex worker

• Shortwave radio band, 1.6–30 MHz
• Shortwave radiation, in visible and near visible bands
• Smith–Waterman algorithm, algorithm for performing local sequence alignment
• sw, Store Word, an RISC-V instruction

• Sport wagon or crossover, an automobile configuration
• Station wagon, a designation of some manufacturers
• Olof Swartz, botanist, abbreviated Sw. in botanical citations
• Band 3, a protein
• Unified Soil Classification System symbol for well graded sand

• Sw., taxonomic author abbreviation for Olof Swartz (1760–1818), Swedish botanist and taxonomist
• Swahili language (ISO 639 alpha-2 code "sw")
• Star Wars, a science fiction media franchise
• "S.W", a song by Blonde Redhead from their 2007 album 23
• Social work