| Acronym | Definition |
|---|
| GDD | Growing Degree Days |
| GDD | Google Developer Day (convention) |
| GDD | Game Design Document |
| GDD | Gesellschaft für Datenschutz und Datensicherung |
| GDD | Glaucoma Drainage Device |
| GDD | Global Data Dictionary |
| GDD | General Discussion and Debate |
| GDD | Global Development Delay |
| GDD | Gruppi di Difesa Della Donna (Italian: Women Advocacy Groups) |
| GDD | Global Disease Detection Program (US CDC) |
| GDD | Geographically Distributed Development |
| GDD | Group Delay Distortion (Hekimian) |
| GDD | General Design Document (US NASA) |
| GDD | Gestion Dynamique des Déchets (French: Dynamic Waste Management) |
| GDD | Graphic Data Dictionary |
| GDD | Gabet Démolition Désamiantage (French asbestos demolition company) |
| GDD | Guilde des Doctorants (French: Doctoral Students Guild) |
| GDD | General Details Depot |
| GDD | Gnathodiaphyseal Dysplasia |
| GDD | Group Divisible Design |
| GDD | Global Distributed Diary |
| GDD | Gaseous Detection Device (Environmental Scanning Electron Microscope) |
| GDD | Gross Domestic Debt (economics) |