Thr

THR or Thr may refer to:

Aviation

 * Mehrabad International Airport (IATA airport code: THR), an international airport serving Tehran, the capital city of Iran
 * Tehran Airline (ICAO airline code: THR), see List of airline codes (T)
 * thrust (THR), see List of aviation, aerospace and aeronautical abbreviations
 * threshold (THR), see List of aviation, aerospace and aeronautical abbreviations

Biochemistry, biology, and medicine

 * Target heart rate, a desired range of heart rate reached during aerobic exercise
 * Threonine (Thr), an amino acid that is used in the biosynthesis of proteins
 * Thrombin (Thr), a serine protease
 * Tobacco harm reduction
 * Total hip replacement

Publications

 * The Hollywood Reporter, an American digital and print magazine
 * Times-Herald Record, a daily newspaper covering the northwest suburbs of New York City

Other uses

 * HTC–Highroad (OCI team code: THR), a former professional cycling team competing in international road bicycle races
 * Tharu languages (ISO 639 language code: thr)
 * THR (soldering), through-hole reflow soldering
 * THR.fm, a defunct radio channel in Malaysia
 * Yamaha THR, a series of guitar amps