| Acronym | Definition |
|---|
| TNT | 2,4,6-Trinitrotoluene (CAS Number 118-96-7; explosive) |
| TNT | The News Tribune |
| TNT | Télévision Numérique Terrestre (France) |
| TNT | Trinidad and Tobago (West Indies) |
| TNT | Team in Training |
| TNT | Turner Network Television (cable TV station) |
| TNT | Try Not To |
| TNT | Tacoma News Tribune |
| TNT | Tried and True |
| TnT | Troponin T |
| TNT | Tell No Tales (music album) |
| TNT | Tell No Tales (band) |
| TNT | Till Next Time |
| TNT | Tessuto Non Tessuto (Italian, syntehtic geomembrane) |
| TNT | Trusted Network Technologies |
| TNT | Train the Trainer |
| TNT | Try New Things |
| TNT | Twin Texel |
| TNT | Today Not Tomorrow |
| TNT | Tactical Narcotics Team |
| TNT | Tradeswomen Now and Tomorrow |
| TNT | Typographical Number Theory (mathematical theory devised by Douglas Hofstadter) |
| TNT | Tomorrow's Neighborhoods Today (Syracuse, NY) |
| TNT | The Neopets Team (virtual pet site) |
| TNT | Trimetallic Nitride Template |
| TNT | Transnational Terrorism |
| TNT | Tuesday Night Titans (TV show) |
| TNT | Tago Ng Tago (Filipino for illegal alien who is in hiding) |
| TNT | Texas Nitrous Technology |
| TNT | Terror Neged Terror (Terror Against Terror, Jewish terrorist/vigilante group) |
| TNT | Teach North Texas (University of North Texas) |
| TNT | Top Nazarene Talent |
| TNT | The Nameless Team (gaming clan) |
| TNT | Tactical Neutralization Team |
| TNT | Telephone Nursing Telezine (emagazine) |
| TNT | Thomas Nationwide Transport, Ltd. (Australia) |
| TNT | The N00b Trainers (Day of Defeat gaming clan) |
| TNT | Tunnel Neutralization Team |
| TNT | Tillamook Narcotics Team |
| TNT | Tackle, Nose Guard, Tackle (defensive lineup in American football) |
| TNT | Total Network Test |
| TNT | Trinity Nazarene Teens (Trinity Church of the Nazarene Macon, Georgia) |
| TNT | The Naire Tunnel |
| TNT | Tutoring Natrona Teens (Natrona, WY) |