CRH explained

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
• Council on Religion and the Homosexual, an American LGBT rights organization
• CRH plc, a building materials company, based in Ireland
• Crimean Tatar language's ISO 639-2 and 639-3 code
• Crouch Hill railway station, a railway station in England (National Rail station code: CRH)