GDD

GDD may refer to:

• 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 software designer Alan Cooper
• Group delay dispersion (or 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