WP or wp may refer to:
Organisations
- Wirtschaftspartei, the Reich Party of the German Middle Class, a political party of Weimar Germany
- Wojsko Polskie, the Polish Armed Forces
- Workers' Party (Singapore), a political party in Singapore
Science and technology
- Watt-peak (Wp) of a solar cell
- Wilting point, in soil moisture determination
Computing
- Weakest precondition in computer science
- Windows Phone operating system
- WordPerfect, a word processor
- Word processor, computer software
Websites
- Wikipedia, an online encyclopedia
- Wirtualna Polska, a Polish web portal
- WordPress.com, a blog hosting provider
Transportation
- Indian locomotive class WP
- Former Western Pacific Railroad, reporting mark
- Island Air (Hawaii), IATA code
Other uses
- WP (Polish TV channel)
- White phosphorus munitions
- Widening participation in higher education
- Wild pitch, in baseball
- Work Programme, a UK welfare to work scheme