NRA
- Israel Nature and Parks Authority
- List of international sports federations
- Narrandera Airport
- National Railway Administration
- National Reconstruction Alliance
- National Recovery Administration
- National Recruitment Agency
- National Reform Association (1844)
- National Reform Association (1864)
- National Register of Archives
- National Republican Army (Russia)
- National Resistance Army
- National Restaurant Association
- National Revolutionary Army
- National Rifle Association
- National Rifle Association (United Kingdom)
- National Rifle Association (disambiguation)
- National Rifle Association of Australia
- National Rifle Association of New Zealand
- National Rivers Authority
- National Roads Authority
- National recreation area
- Neutelings Riedijk Architects
- New Revolutionary Alternative
- Nonresident alien
- Norepinephrine releasing agent
- Nuclear Regulation Authority
- Nuclear reaction analysis
- Seibu 10000 series
- South African National Roads Agency