| Acronym | Definition |
|---|
| GDU | Growing Degree Unit (crop maturity rates) |
| GDU | Gun Display Unit |
| GDU | Garmin Display Unit (avionics) |
| GDU | Gas Dehydration Unit |
| GDU | Gas Detection Unit |
| GDU | Garbage Disposal Unit |
| GDU | George Double Use (band) |
| GDU | Gene Drayton Unit (band) |
| GDU | Groveley Detection Ultrasonic |
| GDU | Gelatin Digesting Unit |
| GDU | Global Delivery Unit (industrial production center network) |
| GDU | graphical display unit |
| GDU | Gastroduodenal Ulceration |
| GDU | Gunner Display Unit |
| GDU | Gun Direction Unit |
| GDU | Gimbal Drive Unit |
| GDU | Glutamine Dumper (amino acid transporter in plants) |
| GDU | Gate Driver Unit (automotive) |
| GDU | Global Defense Union |
| GDU | Gas Drying Unit |