| Abbreviation | Definition |
|---|---|
| UCM | University of Central Missouri |
| UCMC | University of Chicago Medical Center |
| UCMG | University of Calgary Medical Group |
| UCMK | University Campus Milton Keynes |
| UCMO | University of Central Missouri |
| UCMP | University of California Museum of Paleontology |
| UCMVC | Universidad de Ciencias Médicas de Villa Clara |
| UCN | Uniform Course Number |
| UCN | Universidad Católica del Norte |
| UCN | Universities Climate Network |
| UCN | University Compliance Network |
| UCNA | University Commons Neighborhood Association |
| UCNI | University of Cincinnati Neuroscience Institute |
| UCNRS | University of California Natural Reserve System |
| UCO | Unie voor Christelijk Onderwijs |
| UCO | Universidad Católica de Oriente |
| UCO | Universidad de Córdoba |
| UCO | Université Catholique de l'Ouest |
| UCO | University Christian Outreach |
| UCO | University Copyright Office |