OACA
| Acronym | Definition |
|---|---|
| OACA | Office de l'Aviation Civile et des Aéroports (Tunisia) |
| OACA | Ontario Association of Committees of Adjustment and Consent Authorities (zoning lobbying group; Ontario, Canada) |
| OACA | Ontario Association of Committees of Adjustment and Consent Authorities |
| OACA | Office of Arts & Cultural Affairs (formerly Seattle Arts Commission; Seattle, WA) |
| OACA | Outdoor Advertising Control Act (various states) |
| OACA | Ontario College of Art and Design (Canada) |