OCAA
| Acronym | Definition |
|---|---|
| OCAA | Ontario Colleges Athletic Association |
| OCAA | Ontario Clean Air Alliance (Ontario, Canada) |
| OCAA | Oklahoma City-Ada-Atoka Railway Company |
| OCAA | Omnibus Consolidated Appropriations Act (Public Law 104-208) |
| OCAA | Oxfam Community Aid Abroad, Australia |
| OCAA | Orange Community Athletic Association (Orange Village, OH) |
| OCAA | Overseas Children's Aid Association (Australia) |
| OCAA | Onondaga Council on Alcoholism Addictions (Onondaga County, NY) |