| Acronym | Definition |
|---|
| NSM | National Semiconductor Corporation (stock symbol) |
| NSM | Nasjonal Sikkerhetsmyndighet (Norwegian: National Security Authority) |
| NSM | Network Security Manager (Intellitactics) |
| NSM | National Socialist Movement |
| NSM | Network and Systems Management |
| NSM | Not So Much |
| NSM | NASDAQ Stock Market |
| NSM | NetScreen-Security Manager (Juniper Networks) |
| NSM | Non Spacing Mark |
| NSM | National Sales Manager |
| NSM | near-surface mounted |
| NSM | Naval Strike Missile (Kongsberg Defence & Aerospace, Norway) |
| NSM | National Safety Month (June) |
| NSM | Network Security Management |
| NSM | Natural Semantic Metalanguage |
| NSM | Network Service Module |
| NSM | New Social Movement |
| NSM | Network Security Monitor |
| NSM | National Selected Morticians (now Selected Independent Funeral Homes) |
| NSM | Network System Management |
| NSM | Network Storage Module |
| NSM | Nevada State Museum |
| NSM | Non-Stipendiary Minister |
| NSM | Nutrition Society of Malaysia |
| NSM | Network Service Manager (Sprint) |
| NSM | Natural Systems Model |
| NSM | Network Station Manager |
| NSM | New Smoking Material (UK) |
| NSM | New Scientist Magazine |
| NSM | NOHRSC (National Operational Hydrologic Remote Sensing Center) Snow Model |
| NSM | Numerical Spectral Model |
| NSM | Next Subvolume Method |
| NSM | National Systems Management (Alexandria, VA) |
| NSM | NASDAQ National Market System |
| NSM | Neural Space Mapping |
| NSM | Nodal Satellite Multiplexer |
| NSM | Natural Spirit Ministries |
| NSM | National Security Medal |
| NSM | Netsys Service-Level Management (Cisco) |
| NSM | negative small move |
| NSM | Net Square Meter |
| NSM | Nursing Service Management (Sheppard AFB, TX) |
| NSM | Near-Field Scanning Microscope |
| NSM | Narrow Band Sensor Monitor |
| NSM | North Seeking Module |
| NSM | Nuclear Spectrum Measurement |
| NSM | Network Survivability Manager |
| NSM | Node Subsystem Management |
| NSM | New Sensitive Male |
| NSM | Non-Selective Media (microbiology) |
| NSM | Non-Science Major (various schools) |
| NSM | Naval Station Mayport (Jacksonville, FL) |
| NSM | NetSupport Manager (software) |
| NSM | Niagara Science Museum (New York) |
| NSM | New Service Model |