| Abbreviation | Definition |
|---|---|
| TNC | Trans National Company |
| TNCC | The Natural Confectionery Company |
| TNCSC | Tamil Nadu Civil Supplies Corporation |
| TNE | Technical Sales and Service of New England, Inc. |
| TNEB | Tamil Nadu Electricity Board |
| TNF | The Network Factory |
| TNF | The North Face |
| TNFC | The Natural Fibre Company |
| TNG | The Newspaper Guild |
| TNG | The Next Generation of Genealogy |
| TNGI | Texaco Natural Gas Inc |
| TNGI | The Naughton Group Inc |
| TNH | Top Notch Hosting |
| TNH | TracyNewHomes.Com |
| TNH | Tryck Nyman Hayes, Inc. |
| TNI | Tahitian Noni International |
| TNI | Technology News International |
| TNI | Tentara Nasional Indonesia |
| TNI | The Network Inc |
| TNI | Tri National Inc |