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#Digit homology 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) Long-distance relationship of a couple Luxembourg Depositary Receipt