CNO
CNO is the abbreviation of:
- Chief of Naval Operations, the Chief of Staff of the U.S. Navy
- Chief Networking Officer
- Computer Network Operations
- Computer Networks Operation ( unit) unit of the Bundeswehr
- CNO cycle - One of two fusion reactions of hydrogen burning
- Chief Nursing Officer, English name for Nursing Director / in ( Senior nurse at directorate level ), see Care Management
- Disambiguation
- Abbreviation