HVO

HVO may refer to:

Organizations

 * Croatian Defence Council (Croatian: Hrvatsko vijeće obrane), the main military force of Croats of Bosnia and Herzegovina during the Bosnian War
 * Hawaiian Volcano Observatory
 * Health Volunteers Overseas, an American nonprofit organization
 * Hidden Valley Observatory, in South Dakota, United States
 * Hindu Volunteers' Organisation

Sports

 * HC Vítkovice Ostrava, an ice hockey club in Ostrava, Czech Republic
 * Heritage Village Open, a former LPGA golf tournament
 * Hermes Volley Oostende, a volleyball team in Oostende, Belgium

Other uses

 * Hydrotreated vegetable oil, a fuel made from lipids
 * Republic of Upper Volta
 * Volda University College (Norwegian: Høgskulen i Volda)