CNX
# CNX

CNX may refer to:

* IATA code of Chiang Mai International Airport, Thailand
* CNX (TV channel), a defunct television channel operating in Britain from 2002 to 2003
* CNX Resources, natural gas company formerly part of Consol Energy
* OpenStax CNX, an educational content repository based at Rice University
* Middle Cornish, ISO 639-3 language code cnx
* Vagus nerve, the tenth cranial nerve, abbreviated CN X
