| Acronym | Definition |
|---|
| CIRB➣Centre D'informatique Pour La Région Bruxelloise (French) |
| CIRB➣Comprehensive Immigration Reform Bill |
| CIRB➣Canada Industrial Relations Board |
| CIRB➣Canadian Immigration and Refugee Board |
| CIRB➣Construction Industry Research Board |
| CIRB➣Crop Insurance Research Bureau |
| CIRB➣Campus Institutional Review Board (various schools) |
| CIRB➣Compensation Insurance Rating Board |
| CIRB➣Colorado Institute for Research in Biotechnology |
| CIRB➣Capital Investment Review Board |
| CIRB➣Centre Interdisciplinaire de Recherche en Biologie (French: Center for Interdisciplinary Research in Biology) |
| CIRB➣Centre International de Recherche sur le Bilingualism (French) |