ONCE
| Acronym | Definition |
|---|---|
| ONCE | on Chip Emulation |
| ONCE | Organización Nacional de Ciegos de España (Spain) |
| ONCE | Office of the National Counterintelligence Executive (USA) |
| ONCE | Open Network for Commerce Exchange (electronic commerce) |
| ONCE | Open Network Computing Environment |
| ONCE | Online Networked Childrens' Education |