CEH may stand for:
- Certified Ethical Hacker, a professional certification
- Centre for Ecology and Hydrology
- Historical Clarification Commission, Spanish: Comisión para el Esclarecimiento Histórico
- Coleshill Parkway railway station (England), National Rail station code "CEH"
- National Coordinated Effort of Hellenes, Greek American interest group that honored Hillary Clinton in 2009
- Cystic endometrial hyperplasia, a condition in animals that can cause pyometra