CNO
# CNO

CNO may refer to:

* $C/N_0,$ the carrier-to-noise-density ratio of a signal
* Casualty notification officer, a person responsible for informing relatives of death or injury
* Chief networking officer, a business role
* Chief nursing officer, a nursing management position
* Chief of Naval Operations, the head of the United States Navy
* Chino Airport, in California, IATA symbol: CNO
* Chronic nuisance ordinance, a law that aims to evict tenants for reporting crime
* Cis-Neptunian object, an astronomical body within the orbit of Neptune
* CNO cycle, a stellar nuclear fusion reaction
* Coconut oil, an edible oil
* Computer network operations, the optimization and use of digital telecommunications
* CNO Financial Group, an American financial services holding company
* CNO (gene), which encodes the protein cappuccino homolog
* Clozapine N-oxide, a synthetic ligand which activates a receptor
* Fulminate, a chemical compound containing the $CNO^−$ ion
