5W

5W or 5-W may refer to:

Units of measurement

• 5°W, or 5th meridian west, a longitude coordinate
• 5 watts
• 5 weeks
• 5 wins, abbreviated in a Win–loss record (pitching)

Transportation

• 5w, first of a two-part code for a grade of synthetic motor oil
• I-5W; see Interstate 5
  • See also Interstate 5 in California
• AD-5W, a model of Douglas A-1 Skyraider

Other

• The Five Ws are Who, What, When, Where, and Why, the fundamentals of clear and concise communication
• 5W Public Relations
• 5W, IATA code for Astraeus (airline)
• 5 wickets
• Tropical Depression 5W; see 1979 Pacific typhoon season

See also

• W5 (disambiguation)