OADA
| Acronym | Definition |
|---|---|
| OADA | Ohio Automobile Dealers Association (Dublin, OH) |
| OADA | Oregon Athletic Directors Association |
| OADA | Ontario Amateur Dancesport Association (est. 1991; Ontario, Canada) |
| OADA | Oklahoma Automobile Dealers Association |
| OADA | Operator Assistance Directory Assistance (telecommunications) |
| OADA | offense-attrition, defense-attrition (military science) |