USW may refer to:
Organizations Companies HumoAir, an Uzbekistani airline Ugar Sugar Works, an Indian company based in Ugar Khurd, Karnataka US West, an American telecommunications provider
Trade unions and professional associations Union of Soviet Writers United Seafood Workers, an American trade union to which the racketeer Joseph Lanza belonged United Steelworkers, a North American trade union
Universities and educational institutions Universitätsseminar der Wirtschaft, an educational institution that merged into the European School of Management and Technology University of South Wales University of Suwon, a university in Hwaseong, South Korea University of the Southwest, a private Christian university in Hobbs, New Mexico, US
Warfare and weaponry Ultrasonic weapon Undersea warfare Universal Service Weapon, a class of firearm produced by Brügger & Thomet Unrestricted submarine warfare
Other uses Boggs Field, an airport near Spencer, West Virginia, US Ultra-shortwave, see: Very high frequency Ultrasonic spot welding , a German term meaning 'et cetera'