NCO

NCO may refer to:

• NCO Group, an international corporation
• National Children's Orchestra of Great Britain
• Net capital outflow, an economic metric
• NetCDF Operators, software
• Network-centric operations, a theory of war in the information age
• Non-commissioned officer, a category of military rank
• Numerically controlled oscillator, a digital signal generator
• Nuova Camorra Organizzata, a defunct Italian criminal organization
• Isocyanate, a functional group of atoms –N=C=O
• Quonset State Airport, airport with this IATA code
• Indian National Congress (Organisation), a former Political Party in India formally referred as NCO by the Election Commission of India.
• Nevada–California–Oregon Railway, a defunct railway in the western United States