| IUC | Identificateur Unique De Client 
| Others |
| IUC | Identification User Code
| Others |
| IUC | Idiopathic Ulcerative Colitis
| Others |
| IUC | Image Unlimited Communications
| Others |
| IUC | Imposto Unico de Circulacao
| Others |
| IUC | Independent User Center
| Others |
| IUC | Indwelling Urethral Catheter
| Others |
| IUC | Indwelling Urinary Catheter
| Others |
| IUC | Information Unit for Conventions
| Others |
| IUC | Innisfail Underwater Club
| Others |
| IUC | Institute of United Computers
| Others |
| IUC | Institutional University Cooperation
| Others |
| IUC | Insufficient Undercarriage Clearance
| Others |
| IUC | Integrated Urgent Care
| Others |
| IUC | Intelligent and Ubiquitous Computing
| Others |
| IUC | Inter University Center
| Others |
| IUC | Inter University Centre
| Others |
| IUC | Inter University Council
| Others |
| IUC | Interactive Utility Communications
| Others |
| IUC | Interconnect Usage Charge
| Others |
| IUC | Interconnect Usage Charges
| Others |
| IUC | Interconnect User Charge
| Others |
| IUC | Interconnection Usage Charges
| Others |
| IUC | Intergalactic Utilities Commission
| Others |
| IUC | Intermediate Unit Commander
| Others |
| IUC | International Undergraduate Community
| Others |
| IUC | International Underwater Contractors
| Others |
| IUC | International University College
| Others |
| IUC | International University of the Caribbean
| Others |
| IUC | International Urban Cooperation
| Others |
| IUC | International Users Conference
| Others |
| IUC | Internationalization and Unicode Conference
| Others |
| IUC | Interval Usage Code
| Others |
| IUC | Invasive Urothelial Cancer
| Others |
| IUC | Ireland Underwater Council
| Others |
| IUC | Iron Uptake Chelate
| Others |