| OVA | Occurrence Variance Accident 
| Others |
| OVA | Office of the Victim Advocate
| Others |
| OVA | Office of Veterans Affairs
| Others |
| OVA | Office of Victim Advocate
| Others |
| OVA | Office of Victim Assistance
| Others |
| OVA | Oklahoma Volunteers Association
| Others |
| OVA | Ontario Volleyball Association
| Others |
| OVA | Opel Vintage Atlantique
| Others |
| OVA | Open Versatile Anime
| Others |
| OVA | Open Virtual Appliance
| Others |
| OVA | Open Virtualization Alliance
| Others |
| OVA | Open Virtualization Appliance
| Others |
| OVA | Open Virtualization Architecture
| Others |
| OVA | Open Virtualization Archive
| Others |
| OVA | Operation Victory Arrow
| Others |
| OVA | Optical Variable Attenuator
| Others |
| OVA | Orange Vermillion Apple
| Others |
| OVA | Organic Vapor Analyzer
| Others |
| OVA | Organisation for Visual Arts
| Others |
| OVA | Organized Veterans Appreciation
| Others |
| OVA | Original Version Animated
| Others |
| OVA | Original Video Action
| Others |
| OVA | Original Video Animation
| Others |
| OVA | Original Video Anime
| Others |
| OVA | Orlando Volleyball Academy
| Others |
| OVA | Ottava (Octave)
| Others |
| OVA | Outlook Voice Access
| Others |
| OVA | Ovalbumin
| Others |
| OVA | Overhead Value Analysis
| Others |
| OVA | Owning Virtual Amateurs
| Others |
| OVA | Oxford Virtual Academy
| Others |