| Acronym | Sense | Language | Topics |
|---|---|---|---|
| ITU | International Telecommunication Union = IUT | Internacia Unio pri Telekomunikado | In Esperanto = UIT | Union Internationale des Télécommunications | In French |
In English | → Organizations and associations → Telecommunications |
| ITU | Institut für Transurane | In German | → Research institutes → Nuclear, atomic, and molecular physics → Nuclear technology |
| ITU | Institute for Transuranium Elements | In English | → Nuclear, atomic, and molecular physics → 54458 → Nuclear technology |
| ITU | Infrared Telescope Unit | In English | → Astronomy |