VLO
| Acronym | Definition |
|---|---|
| VLO | Valero Energy (stock symbol) |
| VLO | Very Low Observable |
| VLO | Ventro-lateral orbital (area of the brain) |
| VLO | Voluntary Layoff (various organizations) |
| VLO | Landing Gear Operation Speed (aviation) |
| VLO | Volume License Option (software) |
| VLO | Virginia Liaison Office (est. 1978; Washington, DC) |