| Acronym | Definition |
|---|
| TNB | Tenaga Nasional Berhad (electric power utility in Malaysia) |
| TNB | The Night Before |
| TNB | The New Blockaders (band) |
| TNB | Théatre National de Bretagne (French: National Theater of Britain; est. 1990) |
| TNB | Town North Bank (Dallas, TX) |
| TNB | Trinitrobenzene |
| TNB | Teatrul National Bucuresti (Romanian National Theatre in Bucharest) |
| TNB | Tacoma Narrows Bridge |
| TNB | Télévision Nationale du Burkina (Burkina Faso) |
| TNB | The National Bank |
| TNB | Transactions on Nanobioscience |
| TNB | Third National Bank |
| TNB | There's Nothing Better |
| TNB | Thomas and Betts Corporation (also seen as T&B) |
| TNB | Tangent-Normal-Binormal |
| TNB | Tours N' Boys (est. 2008; France) |
| TNB | Trusted Network Base |
| TNB | Teilnahmebescheinigung |
| TNB | Tail Number Bin (aviation maintenance) |
| TNB | Turret Networks Box |
| TNB | 2-Nitro-5-Mercaptobenzoic Acid |