CPH

CPH may refer to:

* Concordia Publishing House the official publisher of The Lutheran Church - Missouri Synod
* Chronic paroxysmal hemicrania (CPH), a chronic headache caused by head injury.
* Close packed hexagonal is an arrangement of spheres into the closest packed arrangement.
* Communistische Partij Holland, a Dutch political party
* Copenhagen, the capital of Denmark
** CPH is the IATA airport code for Copenhagen Airport in Denmark.
* A Rail Motor used in New South Wales, Australia.
* CPH is the ICAO airline designator for Champagne Airlines, France
* Critical Period Hypothesis in developmental biology, specifically regarding language acquisition, describes a theory of how there is a critical age at which a person can learn a language or speak a second language without an accent.