| Acronym | Definition |
|---|
| TDN | The Daily News |
| TDN | Tele Deportes Noticias (Guatemalan sports channel) |
| TDN | Total Digestible Nutrients (livestock feed) |
| TDN | Total Digestible Nutrients |
| TDN | Transit Delay Negotiation |
| TDN | The Daily Neopets (gaming website) |
| TDN | Turkish Daily News |
| TDN | Testdaf-Niveaustufe (German standardized testing) |
| TDN | Thoroughbred Daily News (Red Bank, NJ) |
| TDN | Three Dog Night (band) |
| TDN | Total Dissolved Nitrogen |
| TDN | Tikona Digital Networks (India) |
| TDN | Tactical Data Networks |
| TDN | Technique Dentaire Nouvelle (French: New Dental Technique) |
| TDN | Transaction Delivery Network |
| TDN | Technical Deviation Notice |
| TDN | Tokyo Digital Network (Tokyo, Japan) |
| TDN | Toolshed.down.net |
| TDN | Traditional Domain Name |
| TDN | Tran Dai Nghia (High School, Vietnam) |
| TDN | Théatre de Nice (French: Nice Theater; France; est. 1989) |
| TDN | Travel Directed is Necessary in the Military Service |
| TDN | Temporary Deviation Notice |
| TDN | Transdermal Nitroglycerin (medical) |
| TDN | The Divorce Network (Farmington, CT) |
| TDN | The Dark Nation (gaming clan) |
| TDN | The Dink Network (online game) |
| TDN | Transaction Data Network |
| TDN | Techniques de Nettoyage (French: Cleaning Techniques) |