CRH may refer to:
* Calibre radius head, a traditional British ordnance term for a concept in ballistic projectile design
* 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-60 Black Hawk
* Corticotropin-releasing hormone, a polypeptide hormone and neurotransmitter involved in the stress response
* CRH plc, a building materials company, based in Ireland
* Crimean Tatar language's ISO 639-2 code
* Crouch Hill railway station, a railway station in England (National Rail station code: CRH)
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