NB
| Abbreviation | Meaning | Tamil Meaning | Category |
|---|---|---|---|
| NB | Narrow Band | - | Organizations |
| NB | Navigation Base | - | Organizations |
| NB | Niobium | - | Organizations |
| NB | Nitrogen Base | - | Organizations |
| NB | No-Bias (Relay) | - | Organizations |
| NB | New Brunswick (postal Symbol) -nota Bene (Latin | - | Astronomy |
| NB | Niobium | - | Astronomy |
| NB | Norwegian Bokm?l Language (ISO 639-1 Code) | - | Astronomy |