CRH Ireland
- Country: Ireland
- Type: Commercial
- Website: www.crh.ie
- Update: 05-02
Old Castle International Building Materials Group (CRH plc) is one of the world's largest producers of heavy building materials, headquartered in Dublin, Ireland, with products including aggregates, cement, and asphalt. CRH Group was ranked 411th in the 2016 Fortune 500 ranking.