| Acronym | Definition |
|---|
| DTD | Document Type Definition (markup languages) |
| DTD | Document Type Declaration (markup languages) |
| DTD | Dated |
| DTD | Door to Door |
| DTD | Data Type Definition (XML file validation) |
| DTD | Downtown Disney |
| DTD | Day to Day |
| DTD | Desktop Tower Defense (gaming) |
| DTD | Dusk Till Dawn |
| DTD | Delta Tau Delta (fraternity) |
| DTD | Document Type Definition |
| DTD | Document Type Declaration |
| DTD | Direct to Disk |
| DTD | Drive to Drive |
| DTD | Dump to Disk |
| DTD | Dynamic Thermal Dissipation Technology |
| DTD | Disk to Disk |
| DTD | Developmental Trauma Disorder |
| DTD | Dëschtennis Diddeleng (Luxembourg table tennis) |
| DTD | Direct to Disk (audio recording mode) |
| DTD | Detailed Technical Design (various meanings) |
| DTD | Document Type Description |
| DTD | Définition de Type de Document (French: Document Type Definition) |
| DTD | diastrophic dysplasia |
| DTD | Door to Darkness (gaming) |
| DTD | Dust to Dust (band) |
| DTD | Deep Throat Diva (novel) |
| DTD | Digital Terrain Data |
| DTD | Digital Topographic Data |
| DTD | Directorate of Technical Development (U.k) |
| DTD | Do The Deed |
| DTD | Developmental Testing Directorate (North American Rescue; Greer, SC) |
| DTD | Do the Dew |
| DTD | Do the Dance |
| DTD | Dumber Than Dirt |
| DTD | Detailed Troop Decontamination |
| DTD | Damage Tolerant Design |
| DTD | Domicile to Duty (US Army) |
| DTD | Digitally Transmitted Disease (computer virus) |
| DTD | Dynamic Type Detection |
| DTD | Decision Technologies Division |
| DTD | Differential Trellis Decoding |
| DTD | Data Transfer/Transport Device |
| DTD | Dynamic Timeliness-Density |
| DTD | Developmental Test Director |
| DTD | Director of Training Development |
| DTD | Developer's Tape Delivery |
| DTD | Directorate of Training Developments |
| DTD | Drunk 'til Death |
| DTD | Division of Training and Dissemination (US Department of Education) |
| DTD | Dimensión Telediastólica (Spanish: End-Diastolic Dimension) |