| Acronym | Definition |
|---|
| DDL | Data Definition Language |
| DDL | Direct Download |
| DDL | Drop-Down List (user interface) |
| DDL | Daniel Day-Lewis (actor) |
| DDL | Document Description Language |
| DDL | Database Definition Language |
| DDL | Data Description Language |
| DDL | Device Description Language |
| DDL | Digital Delay Line |
| DDL | Digital Data Link |
| DDL | Dear Doctor Letter (pharmaceutical marketing) |
| DDL | Delegation Of Disclosure Authority Letter |
| DDL | Direct Downlink |
| DDL | Dispersive Delay Line |
| DDL | Data Downlink (NASA) |
| DDL | Demolition Derby League |
| DDL | Digital Driver's License |
| DDL | Data Design Language |
| DDL | Data Distribution List |
| DDL | Document Distribution List |
| DDL | Dictionnaire de Didactique des Langues (French: Dictionary of Language Teaching) |
| DDL | Département de Didactique des Langues (French: Department of Language Didactics; University of Quebec at Montreal; Quebec, Canada) |
| DDL | Dedicated Data Link |
| DDL | Detector Development Laboratory (NASA) |
| DDL | Digital Data Library |
| DDL | Document Definition Language |
| DDL | Data Design Laboratory |
| DDL | Dependable Dealers List (PEZ collectors) |
| DDL | Design Data Laboratory |
| DDL | Design Document Listing |
| DDL | Diode-Diode Logic |
| DDL | Direct Drive Laser Printer |
| DDL | Diplôme de Didactique des Langues (French: Diploma in Language Teaching; various locations) |
| DDL | Display Directory List |
| DDL | Detergent and Decontamination Liquid |
| DDL | Direct Down/Data Link |
| DDL | Devices and Diagnostic Letter (aka Orange Sheet; technology journal) |
| DDL | Debard-David-Le Corvec (French architecture firm) |
| DDL | Dynamique du Langage (French: Dynamics of Language) |
| DDL | Département des Langues (French: Language Department) |
| DDL | Direct Drive Linear (motor) |
| DDL | Développement Durable de la Lecture (French: Sustainable Development of Reading) |
| DDL | D Dynamic Libraries (library loading) |
| DDL | Danse des Lettres (French animation software) |