| Acronym | Definition |
|---|
| NCOA | National Change Of Address (USPS) |
| NCOA | National Council On the Aging |
| NCOA | Non-Commissioned Officer Academy |
| NCOA | National Change of Address |
| NCOA | Nuclear Receptor Coactivator |
| NCOA | National Chamber Orchestra of Armenia (Yerevan, Armenia) |
| NCOA | National Corvette Owners Association |
| NCOA | New Care-Of Address |
| NCOA | National Crime Officers Association (UK) |
| NCOA | Non-Commissioned Officer's Association |
| NCOA | Northern California Officials Association |
| NCOA | National Chevelle Owners Association |
| NCOA | Northern California Osage Association |
| NCOA | Naval C4I Operational Architecture |
| NCOA | Non-Compliant Operationally Acceptable |