ICN may refer to:
Organizations
- ICN Pharmaceuticals or ICN Radiochemicals, now Valeant Pharmaceuticals, a Canadian multinational
- ICN Radio, an Italian-language radio in the New York metropolitan area
- Information Communications Network LLC, a backbone network owner company in Mongolia
- International Competition Network a regulators association
- International Council of Nurses, a federation of national nursing associations
- Iowa Communications Network, an Iowa state agency
Educational institutes
- ICN Graduate Business School, a French graduate business school in Nancy
- UCL Institute of Cognitive Neuroscience, an interdisciplinary grouping of physicians and scientists that is part of University College London
Computing and communication technology
- Integrated Computing Network, maintained by the Los Alamos National Laboratory
- Illinois Century Network, an operation by the Illinois Department of Central Management Services
- Information-centric networking
- iCN GPS, a range of GPS navigation products from Navman
History
- Imperial Chinese Navy, a navy of China from 1875 until the end of Qing Empire in 1912
Science and medicine
- Iodine cyanide, a pseudohalogen with formula ICN or CNI
- Inclusion conjunctivitis of the newborn, in medicine
- Intensive care nursery
- International Code of Nomenclature for algae, fungi, and plants, in botany
Transportation
- Incheon International Airport, near Seoul, South Korea (by IATA airport code)
- ICN (SBB-CFF-FFS), a Swiss intercity tilting passenger train
- InterCity Nagibni, or RegioSwinger, a Croatian tilting diesel passenger train
Other
- Indigenous Corporation Number, as registered by the Office of the Registrar of Indigenous Corporations in Australia