| Acronym | Definition |
|---|
| MIRC | My Internet Relay Chat |
| MIRC | Magnetic-Ink Character Recognition (banking) |
| MIRC | Microelectronics Research Center |
| MIRC | Management Information Report Control |
| MIRC | Marine Information Research Center (Japan) |
| MIRC | Medical Imaging Resource Center |
| MIRC | Microsoft Internet Relay Chat (real-time messaging) |
| MIRC | Mediation Information & Resource Center |
| MIRC | Metsovion Interdisciplinary Research Center (Greece) |
| MIRC | Member of the Idle Rich Class (Man and Superman, George Bernard Shaw book) |
| MIRC | Multi-user Internet Relay Chat |
| MIRC | Micro Infrared Camera |
| MIRC | Mardam-Bey's Internet Relay Chat |
| MIRC | Management Information Report Control (Legalmaster software) |
| MIRC | Moo/Mu Internet Relay Chat |
| MIRC | Military Intelligence Reserve Command |