| NIMH | National Institute for Mental Health
| Others |
| NIMH | National Institute for Mentally Handicaped
| Others |
| NIMH | National Institute for the Mentally Handicapped
| Others |
| NIMH | National Institute of Medical Herbalists
| Others |
| NIMH | National Institute of Mental Health
| Others |
| NIMH | National Institute of Miners' Health
| Others |
| NIMH | National Institutes of Mental Health
| Others |
| NIMH | Nickel Metal Hybrid
| Others |
| NiMH | Nickel Metal Hydride
| Others |
| NiMH | Nickel-Metal Hydride
| Others |
| NiMH | Nickel-Metal Hydride rechargeable battery
| Others |
| NIMH | Not In My House
| Others |