UCB may stand for:
Universities:
- The University of California, Berkeley, United States
- The University of Colorado at Boulder, United States
- University College of Bahrain, Saar, Bahrain
- University College Birmingham, England, UK
- Bayamon Central University (Universidad Central de Bayamón), a private Catholic university in Puerto Rico
- Bangor University (formerly University College, Bangor), Wales, UK
- The University College of Bangor, a campus of the University of Maine at Augusta, Maine, USA
- Environment Campus Birkenfeld (Umwelt-Campus Birkenfeld), a branch of Fachhochschule Trier in Rhineland-Palatinate, Germany
Other uses:
- UCB (Unión de Colegios Bilingües), an school association in Bogota, Colombia
- UCB (company), a global biopharmaceutical manufacturer
- The United Christian Broadcasters, an international broadcasting organisation
- “United Colors of Benetton”, the Benetton clothing company's advertising by-line
- The Upright Citizens Brigade, a US comedy group
- A Unit Control Block, in computing, an area of memory in IBM's z/OS
- Union Commercial Bank, former name of Mauritius Commercial Bank (Madagascar)
- Uganda Commercial Bank, a commercial bank in Uganda owned by the Uganda Government. Sold to Standard Bank in 2002 to form Stanbic Bank (Uganda) Limited
- United Carolina Bank, a bank based in Whiteville, North Carolina, USA until a takeover by BB&T in 1997
- Unconjugated Bilirubin, in clinical biochemistry, the yellow breakdown product of normal heme catabolism.