CCN

CCN may refer to:

In science and technology

 * Cement chemist notation, developed to simplify the formulas used by cement chemists
 * Cereal cyst nematode, a plant disease
 * Corn cyst nematode, a plant disease
 * Cerebrocortical necrosis, a nutritional brain disease of cattle
 * Cloud condensation nuclei
 * Content centric networking, approach to computer-networking architecture
 * Controlled-Controlled Not Gate (also known as a Toffoli gate), a component of a reversible computer
 * Cyclomatic Complexity Number, a software metric
 * CYR61, CTGF, NOV, the first three proteins identified that belong to the "CCN" protein family - also see CCN intercellular signaling protein
 * Critical care nursing

Organizations

 * Camino Cristiano Nicaragüense, a Nicaraguan political party
 * Caribbean Communications Network Ltd., a unit of ONE Caribbean Media Ltd. based in Trinidad and Tobago
 * Chebucto Community Net in Halifax, Nova Scotia
 * City College Norwich, a further education college in the United Kingdom
 * Commission de la capitale nationale, Canadian Crown Corporation, known in English as the National Capital Commission, administrating federal properties in the region around Ottawa, Ontario and Gatineau/Hull, QC
 * Companhia Colonial de Navegação, a former Portuguese shipping company
 * Council of Churches in Namibia, an organization representing Christian churches in Namibia
 * County Councils Network, the network of County Councils in England
 * Covering Climate Now, a consortium of news organizations for news coverage of climate change

Other uses

 * Comedy Central News, a TV show on the Dutch Comedy Central
 * Concours Complet National, a national eventing competition (see Concours Complet International)
 * Certified Clinical Nutritionist, see Nutritionist
 * Railway service code for Central Coast & Newcastle Line, New South Wales, Australia
 * CMS Certification Number, a system for identifying healthcare providers in the United States