| Acronym | Definition |
|---|
| JOA | Journal of Arthroplasty (Journal of the American Association of Hip and Knee Surgeons) |
| JOA | Joint Operating Agreement |
| JOA | Joan of Arc |
| JOA | Joint Operations Area |
| JOA | Jackson Oncology Associates (Jackson, MS) |
| JOA | Journal of Algebra (Elsevier) |
| JOA | Journal of Accountancy (AICPA publication) |
| JOA | Joint Operational Area (US DoD) |
| JOA | Joint Operating Area |
| JOA | Japan Outdoor Adventures (Takasaki, Japan) |
| JOA | Japan Ozone Association |
| JOA | Japan Ostomy Association (urology) |
| JOA | Japan Othello Association |
| JOA | Joint Ownership Agreement (various companies) |
| JOA | Joint Operational Architecture |
| JOA | Japan Orienteering Association |
| JOA | Japan Oyster Association |
| JOA | Jeune Orchestre Atlantique |
| JOA | Joan of Arse (band) |
| JOA | Java OceanAtlas (software; Oracle Corporation) |
| JOA | Judgement of Acquittal (law) |
| JOA | Joint Occupancy Agreement |
| JOA | Joint Objective Area |
| JOA | Jog Off Automatic (electric motors) |