WAF, or waf, may refer to:
Computing Waf, a software build system written in the Python programming language Web application firewall, a proxy device with protocol awareness of HTTP Web application framework, a software framework that is designed to support the development of dynamic websites, Web applications and Web services Write amplification factor
Culture World Architecture Festival, an annual festival and awards ceremony for architecture "Wabash Always Fights," the rallying cheer of Wabash College
Organisations Welsh Automotive Forum, a company that lobbies the UK government on behalf of the automotive industry in Wales Women's Air Force (WAF), organized in 1948 and active until 1976 Women for America First, an American conservative activist organisation Workers Autonomous Federation, one of several underground trade unions in the People's Republic of China World Archery Federation, a governing sports body World Apostolate of Fátima, a Roman Catholic movement to promote a faith according to the apparitions at Fátima World Armwrestling Federation, a federation of arm wrestling associations which organises world championships Wydad de Fès (Wydad Athletic de Fès), a Moroccan association football club
Science and technology WAF1, a protein implicated in p53 transcriptional regulation Weather and Forecasting, an American Meteorological Society journal Width across flats, the distance between the two flats of a wrench (UK: spanner) or socket Wife acceptance factor (or wife approval factor or wife appeal factor), a colloquialism used in discussions related to hi-fi and home theater equipment, home automation
Transport Wah Fu station, a proposed MTR station in Hong Kong (MTR station code) Wallyford railway station, East Lothian, Scotland (National Rail station code)
Other 'With all faults', a phrase used as a disclaimer of any implied warranty of merchantability (often appears in descriptions of second-hand books, cars, knowledge, etc.)