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CRH may refer to:

  • Calibre radius head, a military shell
  • Celtic Resources Holdings, an Irish mining company
  • China Railway High-speed, a high-speed railway service operated by China Railways
  • Choate Rosemary Hall, a private boarding school in Wallingford, Connecticut
  • Coin roll hunting, the hobby of searching change pulled from circulation for collectible coins
  • Combat Rescue Helicopter (HH-60W), being developed for the US Air Force based on the Sikorsky UH-60M Black Hawk
  • Corticotropin-releasing hormone, a polypeptide hormone and neurotransmitter involved in the stress response
  • CRH plc, an Irish company that produces building materials
  • Crimean Tatar language's ISO 639-2 code
  • Crouch Hill railway station, a railway station in England (National Rail station code: CRH)
  • CRI Helicopters Mexico's ICAO airline designator