| ITU | Image Transfer Unit
| Others |
| ITU | Indian Telecom Union
| Others |
| ITU | Indian Telecom Unions
| Others |
| ITU | Information Technology University
| Others |
| ITU | Input Terminal Unit
| Others |
| ITU | Institute for Transuranium Elements
| Others |
| ITU | Institute of Telephony Union
| Others |
| ITU | Instrumentation Table Unit
| Others |
| ITU | Intend To Use
| Others |
| ITU | Intensive Therapy Unit
| Others |
| ITU | Intent to Use
| Others |
| ITU | Interdisciplinary Thematic Unit
| Others |
| ITU | Interior Trim Unique Color
| Others |
| ITU | International Technological University
| Others |
| ITU | International Telecommunication Union
| Others |
| ITU | International Telecommunications Union
| Others |
| ITU | International Toxic Units
| Others |
| ITU | International Toxicity Unit
| Others |
| ITU | International Triathlon Union
| Others |
| ITU | International Typographical Union
| Others |
| ITU | Interrogator Translator Unit
| Others |
| ITU | Interventional Tele Unit
| Others |
| ITU | Istanbul Teknik Universitesi
| Others |
| ITU | Istanbul Teknik Universitesi (Istanbul Technical University)
| Others |