| Acronym | Definition |
|---|
| TSN | The Sports Network |
| TSN | The Sporting News |
| TSN | Time-Sensitive Networking (IEEE standards) |
| TSN | Turkish Society of Nephrology |
| TSN | Transitional Security Network |
| TSN | Tan Son Nhut (Vietnam) |
| TSN | Targeting Social Need (NI) |
| TSN | Trade Support Network (US Customs) |
| TSN | Ten Sing Norway (Young Men's Christian Association) |
| TSN | The Shopping Network (United Arab Emirates) |
| TSN | Time Since New (aerospace; measure of time related to equipment fitted to an aircraft) |
| TSN | Toronto Sports Network |
| TSN | Team Sportscast Network |
| TSN | Transmission Sequence Numbering (wireless communications) |
| TSN | Trackline Single-Unit Non-Return (US DoD) |
| TSN | Task Sequence Number |
| TSN | Tobacco Specific Nitrosamine (carcinogen) |
| TSN | Track Supervision Net (US DoD) |
| TSN | Treatment Solutions Network (addiction recovery) |
| TSN | Tri-Service Solicitation Network (USA) |
| TSN | Thermal Spray Non-Skid (coating; US Navy) |
| TSN | Tomahawk Strike Network |
| TSN | Trunk Switched Network |
| TSN | The Scorpion's Nest (gaming clan) |
| TSN | Test Support Network |
| TSN | Talking Sports Network |
| TSN | Tag Set Name |
| TSN | Tall Ship Newswire |
| TSN | Test Sequence Network |
| TSN | Travel Source Network |
| TSN | The Scouting News (online news website) |
| TSN | The Sat-Am Network (Sonic the Hedgehog TV show) |