8W

8W or 8-W may refer to:

Units of measurement

 * 8°W, or 8th meridian west, a longitude coordinate
 * 8 watts, a derived unit of power
 * 8 weeks
 * 8 wins, abbreviated in a Win–loss record

Aviation

 * 8W, ex-IATA code for BAX Global (defunct airline)
 * 8W, IATA code for Fly All Ways
 * Spartan 8W Zeus, a military aircraft
 * B-8W, a model of Bensen B-8

Rail transport

 * 8w (locomotive), a type of locomotive under the Whyte notation
 * B40-8W, a model of GE Dash 8-40BW locomotive
 * C40-8W, a model of GE Dash 8-40CW locomotive
 * C44-8W, a model of GE Dash 8-44CW locomotive

Other

 * Tropical Depression 8W, part of the 1979 Pacific typhoon season