| Acronym | Definition |
|---|
| NS | No Smoking |
| NS | Non-Smoker |
| NS | Name Server |
| NS | Network Simulator (networking research) |
| NS | Nova Scotia |
| NS | Nintendo Switch |
| NS | Not Sure (survey response) |
| NS | Natural Selection |
| NS | National Security |
| NS | Not Significant |
| NS | Not Specified |
| NS | New South |
| NS | Netscape |
| NS | Network Services |
| NS | New South Wales (Australia) |
| NS | Norfolk Southern Railway (railroad) |
| NS | Non Stop |
| NS | Nervous System |
| NS | Suriname |
| NS | North South |
| NS | North Side |
| NS | North Star (District in the Heart of America Council, Boy Scouts of America) |
| NS | New Style |
| NS | Nippon Shaft |
| NS | National Service |
| NS | New Series |
| NS | Night Stand (TV show) |
| NS | Neurosurgery |
| NS | New Scientist |
| NS | Novi Sad (Vojvodina Province, Yugoslavia) |
| NS | Naval Station |
| NS | Norfork Southern (railway) |
| NS | Nuclear Safety |
| NS | Network Solutions (various locations) |
| NS | Neutron Star (astronomy) |
| NS | National Statistics |
| NS | Not Started |
| NS | Newsstand |
| NS | Nederlandse Spoorwegen (Dutch Railroads) |
| NS | Nippon Steel (Japan) |
| NS | Ninja Storm (Power Rangers cartoon) |
| NS | Normal Saline |
| NS | Not Statistically Significant |
| NS | National Standard |
| NS | Nanosecond |
| NS | Nasal Spray (drug administration) |
| NS | No Support |
| NS | Night Strike (gaming) |
| NS | No Standard |
| NS | NetSuite |
| NS | National Socialism |
| NS | Non-Structural (molecular biology) |
| NS | Nonstandard |
| NS | NeXTStep (Apple Computer) |
| NS | Negeri Sembilan (Malaysian state) |
| NS | No Show |
| NS | Navy SEALs |
| NS | Nice Shot (games) |
| NS | Nickel Steel (product feature) |
| NS | Navier-Stokes |
| NS | Naming Service |
| NS | NickServ (IRC Nickname Server) |
| NS | National Seashore (National Park Service) |
| NS | Nephrotic Syndrome |
| NS | Naruto Shippuden (anime) |
| NS | Not Scheduled |
| NS | New Spring (Wheel of Time short novel) |
| NS | Neck Strap |
| NS | Nihon Spindle (Nihon Spindle Manufacturing Co. Ltd.) |
| NS | Non Sequitur (Latin: Not Continuing, epigraphy) |
| NS | NationStates (online game) |
| NS | Norsk Standard (Norwegian Standard) |
| NS | Nullsoft (developers of Winamp) |
| NS | Nippon Seiki (Japan) |
| NS | Nada Surf (band) |
| NS | Neighbor Solicitation (computing) |
| NS | Nanostructure |
| NS | No Surrender |
| NS | Nimbostratus (cloud formation) |
| NS | Network Series |
| NS | Number of Stations |
| NS | Near Side |
| NS | Non-Stationary Stochastic (neural information processing) |
| NS | No Synchronization |
| NS | Nuclear Submarine |
| NS | Noonan Syndrome |
| NS | NetStumbler (wireless network discovery software) |
| NS | Ninja Scroll (gaming) |
| NS | Non-Status |
| NS | Neutral Site |
| NS | Northsouth |
| NS | Nuclear Shuttle |
| NS | Null Space (mathematics) |
| NS | Named Storms (hurricanes) |
| NS | Nuclear Ship |
| NS | National Special (machine screw thread, Society of Automotive Engineers) |
| NS | Nut Shot |
| NS | Nerve-Sparing |
| NS | Network Strategy |
| NS | Ninja Sword |
| NS | Network Supervisor |
| NS | NATO Secret |
| NS | No Soliciting |
| NS | Nuclear Survivability (US DoD) |
| NS | NetStorm (video game) |
| NS | New Shekels |
| NS | Nature's Swiftness (gaming, World of Warcraft) |
| NS | Negative Small (number) |
| NS | Nissan Soap (Japan) |
| NS | No Stuff (polite form) |
| NS | Nadeem-Shravan (Indian film composers) |
| NS | Number of Suspensions |
| NS | N-Sider (gaming website) |
| NS | Node Switches |
| NS | National Stanine (educational testing) |
| NS | Non Serviceable |
| NS | Naughty Sorceress (gaming, Kingdom of Loathing character) |
| NS | Neighborhood Systems |
| NS | Narrow Sample |
| NS | Nurullah Sonmez (Turkey) |
| NS | Naval Sheltered (environment) |
| NS | Network Selector |
| NS | Netherton Disease |
| NS | Neutralized Solution |
| NS | Nazareth Sisters |
| NS | Nachschrift (Geman: Post Scriptum (PS)) |
| NS | NetStorager System (SGI) |