LDR
LDR stands for:
- Light dependent resistor, see photo resistor
- Linear Depolarization Ratio, see Linear depolarization ratio
- Low, Deep and Round, a training method in equestrian sport, see Rollkur (equestrian sport)
- Low Dynamic Range, low dynamic range for photos, see High Dynamic Range Image
- Liberal and Democratic Reformist Group (1985–1994), see Liberal and Democratic Group
- the IATA code of Lawdar Airport , see Lawdar Airport
- a Mexican airline, see Aero Lider
- Local data room, see data center
