| Acronym | Definition |
|---|
| CIRCA | Communication & Information Resource Centre Administrator |
| CIRCA | Clandestine Insurgent Rebel Clown Army |
| CIRCA | Centre for Interdisciplinary Research in Computational Algebra |
| CIRCA | Center for Instructional and Research Computing Activities |
| CIRCA | Cambridge Interdisciplinary Research Centre on Ageing |
| CIRCA | Canadian Industries Recycling Coal Ash |
| CIRCA | Cooperative Intelligent Real-Time Control Architecture |
| CIRCA | Computer Incident Response Coordination Austria |
| CIRCA | Computer Interactive Reminiscence and Conversation Aid |
| CIRCA | Cisco Incident Response Communication Arena |