English abbreviations from nsec to nsi
- NSEC (Nanoscale Science and Engineering Center)
- NSEP (National Security Emergency Preparedness)
- NSF ((organization) National Science Foundation)
- NSFA (National School Foundation Association)
- NSFG (National Survey of Family Growth)
- NSFL (Navy Services FamilyLine)
- NSFS (Naval Surface Fire Support)
- NSFW (not safe for work)
- NSG (National System for Geospatial-Intelligence)
- NSGA (Naval Security Group Activity)
- NSGI (National System for Geospatial Intelligence)
- NSH (Nova Scotia Highlanders)
- NSHA (North Staffs Housing Alliance)
- NSHS (National Strategy For Homeland Security)
- NSI (Nuclear Surety Inspection)