| Acronym | Definition |
|---|
| RCAS➣Reserve Component Automation System |
| RCAS➣Rosary College of Arts and Sciences (Dominican University; River Forest, IL) |
| RCAS➣Roy Chapman Andrews Society (est. 1999) |
| RCAS➣Rihab Center for Archaeological Studies (Rihab, Jordan) |
| RCAS➣Residual Capability Assessment Survey |
| RCAS➣Regimental Combat Aviation Squadron |
| RCAS➣Rose City Ambulance Service (Michigan) |
| RCAS➣Replication-Competent ASLV Long Terminal Repeat with a Splice acceptor |