| Acronym | Definition |
|---|
| UCG | United Church of God |
| UCG | Underground Coal Gasification |
| UCG | Unicredit Group (European Banking Group) |
| UCG | Unichrome Graphics |
| UCG | University College Galway |
| UCG | Unified Communications Group (Microsoft) |
| UCG | Unión de Crédito General, SA (Mexico) |
| UCG | Unintentional Comedy Gold |
| UCG | Universal Command Guide for Operating Systems (Guy Lotgering book) |
| UCG | United Communities Group (gaming) |
| UCG | Unions Chrétiennes de Genève (French: Christian Association of Geneva; Switzerland) |
| UCG | Used Coffee Grounds (composting and gardening) |
| UCG | Urine Chorionic Gonadotrophin |
| UCG | Unrealized Capital Gains |
| UCG | Universal Classics Group (recording label) |
| UCG | Upper Cumberland Grotto (Tennessee caving club) |
| UCG | Unit Cost Goals |
| UCG | University of Crete, Greece |
| UCG | United Credit Group |
| UCG | Unión Católica Guatemalteca (Guatemalan Catholic Union) |
| UCG | United Controls Group (Mount Vernon, OH) |