| Acronym | Definition |
|---|
| IRCA | Immigration Reform and Control Act of 1986 |
| IRCA | Indiana Resource Center for Autism |
| IRCA | International Register of Certified Auditors |
| IRCA | Indian Railway Conference Association (est. 1903) |
| IRCA | International Radio Club of America |
| IRCA | Iowa Roofing Contractors Association (est. 1959) |
| IRCA | International Register of Civil Aircraft (est. 1961) |
| IRCA | Interest Rate Cap Agreement |
| IRCA | Integrated Readiness Capability Assessment |
| IRCA | Instituto Reynosense para la Cultura y las Artes (Spanish: Reynosense Institute for Culture and the Arts; Municipal Institute of Culture in Reynosa; Mexico) |
| IRCA | International Risk Control Academy (South Africa) |