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HSR

HSR may refer to:

  • Haliburton Scout Reserve, a Scouts Canada camp
  • Hamilton Street Railway
  • Hart–Scott–Rodino Antitrust Improvements Act
  • Health services research
  • Henson Scout Reservation, a Boy Scouts of America camp in Maryland
  • Hidden surface removal
  • Hierarchical state routing
  • High-availability Seamless Redundancy
  • High school reunion
  • High-speed rail
  • Higher-speed rail
  • Hisar Junction railway station, in India
  • Historical Social Research
  • Historic Sportscar Racing, a U.S. organization involved in historic motorsport
  • Hochschule für Technik Rapperswil, a university St. Gallen, Switzerland
  • Homestar Runner, an Internet cartoon
  • Homogeneously staining region
  • Horseshoe Scout Reservation, a Boy Scouts of America camp in Pennsylvania
  • Hot Springs Municipal Airport, in South Dakota, United States
  • Human subject research
  • Human Sexual Response (band)
  • Hungarian Soviet Republic
  • Mitsubishi HSR, a concept car