HDR or hdr may refer to:
Businesses HDR, Inc., an American design firm HevyDevy Records, a Canadian music label High Dive Records, an American music label
Technology Hard disk recorder, a system that uses a high-capacity hard disk to record digital audio or digital video HD Radio, in audio broadcasting High dynamic range, an enhanced signal representation in images, videos, audio, or radio High-dynamic-range rendering, in computer graphics High-dynamic-range imaging, in photography High-dynamic-range video, in television
Science Homology directed repair, of cellular DNA Hot dry rock, a geothermal energy source GATA3 (or HDR), a protein and gene
Transport Hyderabad Junction railway station, Sindh, Pakistan Hadrian Road Metro station, Tyneside, England
Other uses , a post-doctoral academic degree in some French-speaking countries Honicknowle Defence Regiment, a 2000s criminal gang from Plymouth, England Human Development Report, an annual United Nations publication Humanitarian daily ration, an air-dropped food ration for disasters
See also HDRS Header (disambiguation) High Data Rate (disambiguation)