| NCPA | Nagios Cross Platform Agent 
| Others |
| NCPA | National Cat Protection Association
| Others |
| NCPA | National Center for Performing Arts
| Others |
| NCPA | National Center for Physical Acoustics
| Others |
| NCPA | National Center for Policy Analysis
| Others |
| NCPA | National Centre for the Performing Arts
| Others |
| NCPA | National Centre Performing Arts
| Others |
| NCPA | National College Players Association
| Others |
| NCPA | National Collegiate Paintball Association
| Others |
| NCPA | National Community Pharmacists Association
| Others |
| NCPA | National Congress Party of Amethy
| Others |
| NCPA | National Cooperative Purchasing Alliance
| Others |
| NCPA | National Crime Prevention Association
| Others |
| NCPA | Nebraska Chiropractic Physicians Association
| Others |
| NCPA | NEBRASKA College Preparatory Academy
| Others |
| NCPA | Nebraska Concrete Paving Association
| Others |
| NCPA | Network Connections Control Panel
| Others |
| NCPA | North Carolina Paralegal Association
| Others |
| NCPA | North Carolina Press Association
| Others |
| NCPA | North Carolina Psychiatric Association
| Others |
| NCPA | North Carolina Psychological Association
| Others |
| NCPA | Northern California Packet Association
| Others |
| NCPA | Northern California Percussion Alliance
| Others |
| NCPA | Northern California Power Agency
| Others |
| NCPA | Northern California Publishers and Authors
| Others |