Wikipedia
UCN
UCN may stand for:
- Ultracold Neutrons
- Universal Character Name, as in the ISO 8859 standard, Unicode, C99, or C++.
- Universidad Católica del Norte, a university in Antofagasta, Chile
- University College of the North, a university college in Manitoba, Canada
- Central University of Nicaragua, a private and nonprofit institution, Nicaragua
- Urocortin, a human gene
- UCN, the IATA Airport Code for Buchanan Airport