| Acronym | Sense | Language | Topics |
|---|---|---|---|
| ICU | Intensive Care Unit | In English | → Medicine |
| ICU | In-Flight Calibration Unit | In English | |
| ICU | Interface Control Unit | In English | → Human-computer interaction |
| ICU | Intersection Capacity Utilization | In English | → Transport and postal services |
| ICU | Istituto per la Cooperazione Universitaria | In Italian | → Organizations and associations → Higher education, universities |