| Acronym | Definition |
|---|
| GDM | Global DOS Memory |
| GDM | Gnome Display Manager |
| GDM | Gestational Diabetes Mellitus (medical) |
| GDM | Glass Door Merchandiser (various companies) |
| GDM | Google Desktop for Mac |
| GDM | Global Digital Museum |
| GDM | Global Delivery Model |
| GDM | Gregory Dickow Ministries (Chicago, IL) |
| GDM | General Dollar Magnitude |
| GDM | General Design Memorandum (USACE) |
| GDM | Gardner, Massachusetts (airport code) |
| GDM | Global Data Management |
| GDM | Government Debt Management |
| GDM | Grid-Dip Meter |
| GDM | Grain Dealers Mutual Insurance (Indianapolis, IN) |
| GDM | Green Dragon Media (various locations) |
| GDM | Global Development Marketplace (competition) |
| GDM | General Departmental Management (US DHHS) |
| GDM | Group on Defense Matters |
| GDM | Goddard Directive Management |
| GDM | General Development Map |
| GDM | Global Distortion Metric |
| GDM | Global Data Mart |
| GDM | German Deutschmarks (obsolete currency of Germany) |
| GDM | Goods Departed Message (UK) |