| Acronym | Definition |
|---|
| OBRA | Omnibus Budget Reconciliation Act (various years) |
| OBRA | Oregon Bicycle Racing Association |
| OBRA | Oakland Base Reuse Authority (Oakland, CA) |
| OBRA | Organization of Bilingual Rehabilitation Associates |
| OBRA | Online Business for Regional Australia (resource) |
| OBRA | Ontario Barrel Racing Association |
| OBRA | Outer Banks Repeater Association (Nags Head, NC) |
| OBRA | Oregon Biomedical Research Association (Beaverton, OR) |
| OBRA | Okinawa Bull Riding Association |
| OBRA | Outward Bound Residential Alternatives |
| OBRA | Office of Biodefense Research Affairs (Division of Microbiology and Infectious Diseases; US National Institute of Allergy and Infectious Diseases) |
| OBRA | Outback Barrel Racing Association (Montana) |
| OBRA | Oregon Barrel Racing Association |
| OBRA | Oil Burner Research Association |
| OBRA | Oklahoma Boat Racing Association (Tulsa, OK) |
| OBRA | Office of Biodefense Research Applications (National Institutes of Health) |