WPO may refer to:
Computing and math Web performance optimization, in website optimization Well partial order, an ordering relation in mathematics Whole program optimization, a compiler optimization
Other uses North Fork Valley Airport (IATA code), in the List of airports in Colorado, US Weakly Pareto Optimal Warsaw Pact Organisation, a former military alliance Washington Post Company (former NYSE symbol) World Photography Organisation, for amateur and professional photographers Wikipediocracy World Intellectual Property Organization, sometimes abbreviated as WPO WPO (AM), Memphis, Tennessee radio station, which was licensed from 1922 until 1923
See also WPO-3, 1941 plans for the defense of the Philippine Islands in the Battle of Bataan