| Acronym | Definition |
|---|
| OABA➣Outdoor Amusement Business Association (Winter Park, FL) |
| OABA➣Ontario Agri Business Association (est. 1999; Guelph, Ontario, Canada) |
| OABA➣Ohio Alpaca Breeders Association (est. 1997) |
| OABA➣Ontario Artist Blacksmith Association (Canada) |
| OABA➣Ortho-Amino Benzoic Acid (chemistry) |
| OABA➣Occupational Allergic Bronchial Asthma |