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