HVO

HVO is the abbreviation for:

• Hawaiian Volcano Observatory , a volcanic research institute in the United States
• Historical association for Upper Franconia
• Hrvatsko vijeće obrane (Croatian Defense Council), the Croatian army in Bosnia-Herzegovina during the Bosnian War
• Hydrogenated vegetable oil (hydrotreated vegetable oil), u. a. NeXBTL

HvO is the abbreviation for:

• On-site helpers , support for the ambulance service

This is a disambiguation page for differentiating between several terms identified with the same word.