WP or wp may refer to:

Organisations

Warsaw Pact The Warsaw Pact (WP) or Treaty of Warsaw, formally the Treaty of Friendship, Cooperation and Mutual Assistance, was a collective defense treaty signed in Warsaw, Poland, between the Soviet Union and seven other Eastern Bloc socialist republic ...

, a disbanded organization of Central and Eastern European communist states * , the Reich Party of the German Middle Class, a political party of Weimar Germany * , the Polish Armed Forces * Workers' Party (Singapore), a political party *

Workers Party (United States) The Workers Party (WP) was a Third Camp Trotskyist group in the United States. It was founded in April 1940 by members of the Socialist Workers Party who opposed the Soviet invasion of Finland and Leon Trotsky's belief that the USSR under Josep ...

, a defunct political party

Science and technology

Watt-peak The nominal power is the nameplate capacity of photovoltaic (PV) devices, such as solar cells, modules and systems, and is determined by measuring the electric current and voltage in a circuit, while varying the resistance under precisely define ...

(W_p), the nominal power of a photovoltaic *

Wilting point Permanent wilting point (PWP) or wilting point (WP) is defined as the minimum amount of water in the soil that the plant requires not to wilt. If the soil water content decreases to this or any lower point a plant wilts and can no longer recover ...

, in soil moisture determination

Computing

Weakest precondition Weakness is a symptom of a number of different conditions. The causes are many and can be divided into conditions that have true or perceived muscle weakness. True muscle weakness is a primary symptom of a variety of skeletal muscle diseases, i ...

(''wp''), in computer science *

Windows Phone Windows Phone (WP) is a discontinued family of mobile operating systems developed by Microsoft for smartphones as the replacement successor to Windows Mobile and Zune. Windows Phone featured a new user interface derived from the Metro design la ...

, a smartphone operating system * WordPerfect, a word processor *

Word processor A word processor (WP) is a device or computer program that provides for input, editing, formatting, and output of text, often with some additional features. Word processor (electronic device), Early word processors were stand-alone devices ded ...

, software used for the production of printable material *

WordPress WordPress (WP or WordPress.org) is a free and open-source content management system (CMS) written in hypertext preprocessor language and paired with a MySQL or MariaDB database with supported HTTPS. Features include a plugin architecture ...

(wp.org), a content management system

Websites

Wikipedia Wikipedia is a multilingual free online encyclopedia written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and using a wiki-based editing system. Wikipedia is the largest and most-read refer ...

, an online encyclopedia * Wirtualna Polska, a Polish web portal * WordPress.com, a blog hosting provider powered by WordPress

Transportation

* Indian locomotive class WP *

Western Pacific Railroad The Western Pacific Railroad was a Class I railroad in the United States. It was formed in 1903 as an attempt to break the near-monopoly the Southern Pacific Railroad had on rail service into northern California. WP's Feather River Route dire ...

(reporting mark), a former American railroad *

Island Air (Hawaii) Island Air (officially Hawaii Island Air) was a commuter airline based in Honolulu, Hawaii. It operated scheduled inter-island passenger services in Hawaii. Its main base was the Daniel K. Inouye International Airport on Oahu. The airline mai ...

(IATA code), an airline

Other uses

* WP (Polish TV channel), a television channel owned by Wirtualna Polska Holding *

White phosphorus munitions White phosphorus munitions are weapons that use one of the common allotropes of the chemical element phosphorus. White phosphorus is used in smoke, illumination, and incendiary munitions, and is commonly the burning element of tracer ammun ...

* Widening participation, in higher education *

Wild pitch In baseball, a wild pitch (WP) is charged against a pitcher when his pitch is too high, too short, or too wide of home plate for the catcher to control with ordinary effort, thereby allowing a baserunner, or the batter (on an uncaught third stri ...

, in baseball * Work Programme, a UK welfare to work scheme *

Wettable powder A wettable powder (WP) is an insecticide or other pesticide formulation consisting of the active ingredient in a finely ground state combined with wetting agents and sometimes bulking agents. Wettable powders are designed to be applied as a dilut ...