| Acronym | Definition |
|---|
| OCWA➣Ontario Clean Water Agency |
| OCWA➣Orange-crowned Warbler |
| OCWA➣Onondaga County Water Authority |
| OCWA➣Oxford Companion to Western Art |
| OCWA➣Orange County Water Authority (New York) |
| OCWA➣Octopus Mountain, Washington |
| OCWA➣Overseas Chinese Website Association |
| OCWA➣Ohio Championship Wrestling Association |
| OCWA➣Operations Center Work Area |
| OCWA➣Oregon Construction Workforce Alliance |
| OCWA➣Oroua Catchment Water Allocation |
| OCWA➣Orthodox Christian Women's Association |
| OCWA➣Oldmans Creek Watershed Association |
| OCWA➣Orange County Woodworkers Association (Orange County, California) |
| OCWA➣Oklahoma CattleWomen's Association, Inc. |
| OCWA➣Outdoor Championship Wrestling Alliance |
| OCWA➣Oxford Community Work Agency |
| OCWA➣Ontario County Wiffle Association (Farmington, NY) |