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)