SSW

SSW may refer to:


 * South-southwest, a compass direction (one of the eight "half-winds")
 * SSW (TV station), the callsign of a TV station in the South West and Great Southern regions of Western Australia
 * Seminary of the Southwest, an Episcopal seminary in Austin, Texas, USA
 * St. Louis Southwestern Railway, reporting mark SSW
 * South Schleswig Voter Federation, German: Südschleswigscher Wählerverband
 * Schichau Seebeckwerft, a German shipbuilding corporation
 * Siemens-Schuckertwerke, a German electrical engineering company
 * Special Service Wing, a special forces unit of the Pakistan Air Force
 * Sudden stratospheric warming, a meteorological phenomenon in the upper troposphere
 * Sutton SignWriting
 * Southern States Wrestling, a professional wrestling promotion
 * Swati language ISO 639 code
 * Samsung White, former League of Legends team
 * Seam-shifted wake, an aerodynamic phenomenon involving baseballs