| Acronym | Definition |
|---|
| FDT | Fluctuation-Dissipation Theorem (statistical physics) |
| FDT | Field Device Tool |
| FDT | Full Duplex Transmission |
| FDT | Formal Description Techniques |
| FDT | Field Definition Table |
| FDT | Full Duplex Tokenring |
| FDT | Full Duplex Transhybrid |
| FDT | Fixed Disk Table |
| FDT | Flat Display Trinitron |
| FDT | Fast Data Transfer (computing) |
| FDT | Frequency Doubling Technology (glaucoma test) |
| FDT | Franking Deficit Tax (Australia) |
| FDT | Fully-Differential Transconductor (electrical engineering) |
| FDT | Formal Description Technique |
| FDT | Fermeture de Tahiti (French fence company) |
| FDT | Frame Due Time |
| FDT | Force Development Test |
| FDT | Floodway Data Table (various locations) |
| FDT | Flow Detection Transducer (wastewater monitoring) |
| FDT | Flash Distribution Transport (France) |
| FDT | Final de Temporada (Spanish) |
| FDT | First Destination Transportation |
| FDT | Fuzzy Distance Transform (bone imaging) |
| FDT | Flight Dynamics Team |
| FDT | Forward Distribution Team (various armed forces) |
| FDT | Forward-Deployed Trainer |
| FDT | Formal Design Theory |
| FDT | Flight Data Transmitter |
| FDT | Fluxo de Dados Transfronteiras (Portuguese: Transboundary Flow Data) |