CNO

CNO may refer to:

• C/N₀, 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
• CNO cycle, a stellar nuclear fusion reaction
• Coconut oil, an edible oil
• College of Nurses of Ontario, an Ontario professional regulatory body
• 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
• Nitrile oxide, a chemical compound with the functional group RCNO