| Acronym | Definition |
|---|
| TNN | The National Network (formerly The Nashville Network) |
| TNN | The Nashville Network (now The National Network) |
| TNN | Tainan, Taiwan (Airport Code) |
| TNN | Transport Network Node |
| TNN | The Nerd Network (online gaming clan) |
| TNN | Transactions on Neural Networks (IEEE) |
| TNN | Times News Network |
| TNN | Television News Network (Pakistan) |
| TNN | Totally No-Noise (Zalman computer case) |
| TNN | Théatre National de Nice (French: National Theater of Nice) |
| TNN | Trinitronaphthalene (explosives) |
| TNN | ThomasNet News |
| TNN | Termnet News |
| TNN | The Net Now (Internet Design and Hosting) |
| TNN | Tribulation News Network (Kissimmee, FL; est. 1997) |
| TNN | Travel Nurse Network |
| TNN | Transport News Network Ltd (UK) |
| TNN | Tactical Network Nodal |
| TNN | Turner News Network |
| TNN | TeleNewsNetwork (Germany) |
| TNN | The Naughton Network (Australia) |
| TNN | Tanjung Nusa Niwe |