WP
- Air Antwerp
- Indian locomotive class WP
- Island Air (Hawaii)
- The Washington Post
- WP (Polish TV channel)
- WP Suspension
- Warsaw Pact
- Watt-peak
- Weakest precondition
- Western Pacific Railroad
- Western Province (rugby union)
- Western Province Ice Hockey Association
- Wettable powder
- White phosphorus munition
- Widening participation
- Wikipedia
- Wild pitch
- Wilting point
- Windows Phone
- Wirtschaftspartei
- Wirtualna Polska
- Wojsko Polskie
- Word processor
- WordPerfect
- WordPress
- WordPress.com
- Work Programme
- Workers Party (United States)
- Workers' Party (Singapore)