| NIR | Natalya Illyinichna Rostova 
| Others |
| NIR | National Identity Register
| Others |
| NIR | National Immunisation Register
| Others |
| NIR | National Immunisation Registry
| Others |
| NIR | National Institute of Restoration
| Others |
| NIR | National Institute Research (National Institute of Development, Research, and Documentation)
| Others |
| NIR | National Insurance Repository
| Others |
| NIR | National International Roofing
| Others |
| NIR | National Internet Registry
| Others |
| NIR | Natural Increase Rate
| Others |
| NIR | Near Infra Red
| Others |
| NIR | Near Infra-Red
| Others |
| NIR | Near InfraRed
| Others |
| NIR | Near Infrared and refers
| Others |
| NIR | Near Infrared Reflectance
| Others |
| NIR | Near Infrared Response
| Others |
| NIR | Near-infrared
| Others |
| NIR | Negros Island Region
| Others |
| NIR | Net Interest Revenue
| Others |
| NIR | Network Impact Report
| Others |
| NIR | Network Information Registry
| Others |
| NIR | Network Information Repository
| Others |
| NIR | New Intravascular Rigid
| Others |
| NIR | Nirvana If Real
| Others |
| NIR | Non Intrusive Reservation
| Others |
| NIR | Northern Ireland Railways
| Others |
| NIR | Nota di Iscrizione a Ruolo
| Others |