| Acronym | Definition |
|---|
| NMI | No Middle Initial |
| NMI | National Microelectronics Institute (UK) |
| NMI | Normalized Mutual Information |
| NMI | NASA Management Instruction |
| NMI | Neuro-Muscular Incapacitation |
| NMI | N-Methylimidazole |
| NMI | Non Metallic Inclusions (steel industry) |
| NMI | National Maritime Institute |
| NMI | Number of Methods Inherited |
| NMI | Normalized Moment of Inertia |
| NMI | Neuromagnetic Imaging |
| NMI | No Message Included (used in subject of message to indicate nothing is in the body of the message) |
| NMI | Non-Major Item |
| NMI | Norwest Mortgage Incorporated |
| NMI | Network Management Interface |
| NMI | New Media Institute (various organizations) |
| NMI | Natural Marketing Institute |
| NMI | Near Miss Incident |
| NMI | New Mexico Independent (news network) |
| NMI | Nuclear Medicine Institute (University of Findlay; Findlay, OH) |
| NMI | No Malice Intended (band) |
| NMI | National Measurement Institute (Australia) |
| NMI | Nova Measuring Instruments (various locations) |
| NMI | Number of Module Instances |
| NMI | National Monuments and Icons |
| NMI | Novo Millennio Ineunte (apostolic letter; Catholic Church) |
| NMI | National Meteorology Institute |
| NMI | NSF (National Science Foundation) Middleware Initiative |
| NMI | Non-Maskable Interrupt |
| NMI | National Maglev Initiative |
| NMI | Nuclear Medicine Imaging |
| NMI | Northern Mariana Islands |
| NMI | Norwegian Meteorological Institute (Norway) |
| NMI | Non-Manufacturing Index (statistic) |
| NMI | National Metering Identifier (Australia) |
| NMI | National Military Intelligence |
| NMi | Nautical Mile |
| NMI | Need More Info |