GDD
# GDD

GDD may mean:

* Game design document, a design document specific to video games.
* Gaseous detection device, a technology used with some electron microscopes and similar instruments
* Geographically Distributed Development
* Glaucoma drainage device
* Global Data Dictionary
* Global Drug Development
* Global developmental delay, a childhood medical disorder
* Goal-Directed Design, a user interface design method developed by Alan Cooper
* Group delay dispersion (Group velocity dispersion), effect of a medium on an optical signal
* Google Developer Day, Google promotional events for developers
* Great Dragon's Dale, a Russian-language video gaming magazine
* Green Degree Directory
* Growing degree-day, a unit for measuring climatic warmth over a period of time
