| Acronym | Definition |
|---|
| MNA | Mehr News Agency (Iran) |
| MNA | Michigan Nonprofit Association |
| MNA | Merpati Nusantara Airlines (Indonesian airlines) |
| MNA | Military News Agency (various locations) |
| MNA | Massachusetts Nurses Association |
| MNA | Merchant Navy Association (UK) |
| MNA | Minnesota Nurses Association |
| MNA | Medidas No Arancelarias (Spanish: Non-Tariff Measures; various locations) |
| MNA | Monitored Natural Attenuation |
| MNA | Medication Nursing Assistant |
| MNA | Mini-Nutritional Assessment |
| MNA | Multigrid Network Architecture |
| MNA | Maserati North America (cars; Englewood Cliffs, NJ) |
| MNA | Michigan Nature Association |
| MNA | Mission to North America (Presbyterian Church in America outreach) |
| MNA | Michigan Nurses Association |
| MNA | Member of National Assembly (Quebec) |
| MNA | Metis Nation of Alberta |
| MNA | Mississippi Nurses Association |
| MNA | Museo Nacional de Arte (Spanish: National Art Museum; Bolivia) |
| MNA | Montana Nurses' Association |
| MNA | Masters in Nonprofit Administration (degree) |
| MNA | Mogavero Notestine Associates (Sacramento, CA) |
| MNA | Michelin North America, Inc |
| MNA | Match Network Analyzer |
| MNA | Modified Nodal Analysis |
| MNA | Missing, Not Enemy Action (US DoD) |
| MNA | Missouri & Northern Arkansas (railroad) |
| MNA | Mission Needs Analysis |
| MNA | May Never Arrive |
| MNA | Management Network Architecture |
| MNA | MSCP (Multiple Species Conservation Program) Neutral Area Boundary (California) |
| MNA | Minimum Numbering Area (telecommunications) |
| MNA | Multi-Network Area |
| MNA | M Newman Associates Ltd (UK) |
| MNA | Media Negotiation Agent |
| MNA | Microwave Network Analyzer |
| MNA | Mean Number of Class Attributes |