NSP
- Afghan National Solidarity Programme
- Coronavirus
- Genetic Code
- ICAO
- Long Island
- NSP1
- NSP2 (rotavirus)
- NSP3
- NSP4 (rotavirus)
- NSP5
- NSP6 (rotavirus)
- National Ski Patrol
- National Solidarity Party (Singapore)
- Natural swimming pool
- Nature's Sunshine Products
- Nebraska State Patrol
- Needle exchange programme
- Netaji Subhash Place metro station
- Network of Spiritual Progressives
- Network security policy
- Network service provider
- Nevada State Prison
- New Southbound Policy
- New York (state)
- Niagara Falls, New York
- Niagara Scenic Parkway
- Ninja Sex Party
- Nordic Service Partners
- North Shore (Long Island)
- Northern State Parkway
- Northern States Power Company
- Nova Scotia Power
- Nuovo Siluro Pesante
- Nurse scheduling problem
- Nvidia Shield Portable
- People's Freedom Movement (Serbia)
- Rotavirus
- Salisbury City Police
- Samaritan's Purse
- Viral nonstructural protein