- ZD stands for Ziff-Davis
- ZD stands for Zener Diode
- ZD stands for Zero Defects
- ZD stands for Zadar, Croatia (license plate)
- ZD stands for Zip Disk
- ZD stands for Zenith Distance
- ZD stands for Zone Description
- ZD stands for Zero Drift (electronics)
- ZD stands for Zdaemon (multiplayer Doom port)
- ZD stands for Zone de Détection (French: Detection Zone; security)
- ZD stands for Zinc Depleted (biochemistry)
- ZD stands for Zero Doppler
ZD