| Acronym | Definition |
|---|
| MCNA | Manitoba Community Newspapers Association (Canada) |
| MCNA | Mid-Cambridge Neighborhood Association (Cambridge, Massachusetts) |
| MCNA | Medical Clinics of North America |
| MCNA | Managed Care of North America, Inc. |
| MCNA | Mobile Communication Network Architecture |
| MCNA | Muslim Children of North America |
| MCNA | Microsoft Certified Network Administrator |
| MCNA | Middlesex County Netball Association (UK) |
| MCNA | Missouri College Newspaper Association |
| MCNA | Middle City Neighborhood Association (Niagara Falls, New York) |
| MCNA | Monte Carlo NCD Analogue |
| MCNA | McGlaughlin Corridor Neighborhood Association (California) |
| MCNA | Municipal Corporation of Narela |