CIH or cih may refer to:
- CIH (computer virus), also known as Chernobyl and Spacefiller
- CIH Bank, a wholly owned subsidiary of the Moroccan Caisse de dépôt et de gestion
- Capricorn Investment Holdings, a southern African umbrella for the Capricorn group of companies
- Certified Industrial Hygienist, professional credential for occupational hygienists in the United States
- IATA code for Changzhi Wangcun Airport
- The Chartered Institute of Housing, a UK-based professional society
- ISO 639-3 code for the Chinali language
- Opel cam-in-head engine, a series of vehicle engines
- Chromogenic immunohistochemistry
This disambiguation page lists articles associated with the title CIH.
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