ANTT
| Acronym | Definition |
|---|---|
| ANTT | Agência Nacional de Transportes Terrestres (Portuguese: National Agency for Land Transport; Brazil) |
| ANTT | Arquivo Nacional Torre do Tombo (Portuguese: Torre do Tombo National Archive) |
| ANTT | Average Normalized Turnaround Time |
| ANTT | Aseptic Non-Touch Technique (healthcare practice) |
| ANTT | Aboriginal National Theatre Trust (Australia) |
| ANTT | Australian National Tide Tables |