LDR

LDR may refer to:

Science, medicine and technology

 * LDraw filename extension
 * Low-dynamic-range rendering (LDR rendering) in 3D computer graphics, vs. high-dynamic-range rendering
 * Light Dependent Resistor, or photoresistor
 * Lateral digit reduction in birds; see Origin of birds
 * A Local Democracy Reporter, working for the United Kingdom's Local Democracy Reporting Service

Other uses

 * European Liberal Democrat and Reform Party (European Parliament group)
 * Lana Del Rey, American singer-songwriter (born 1985)
 * Loan-deposit ratio
 * Long-distance relationship of a couple