| Acronym | Definition |
|---|
| ICAU➣International Consortium of ALEPH Users |
| ICAU➣Instituto Cultural Anglo Uruguayo (Spanish: Anglo-Uruguayan Cultural Institute; Montevideo, Uruguay) |
| ICAU➣International Civil Aviation University (various locations) |
| ICAU➣Internet Criminal Activity Unit (Illinois Attorney General) |
| ICAU➣Intracarotid Arterial Urokinase Therapy |
| ICAU➣International Centre for Archaeology Underwater (Riverside, CA) |