GTD may refer to:
- Geometric theory of diffraction
- Gestational trophoblastic disease
- Getting Things Done, a book by David Allen
- Global Terrorism Database
- Gourinathdham railway station, in West Bengal, India
- Grapevine trunk disease
- GT Daytona, a class in the WeatherTech SportsCar Championship
|This disambiguation page lists articles associated with the title GTD.
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