RCSI
| Acronym | Definition |
|---|---|
| RCSI | Royal College of Surgeons in Ireland |
| RCSI | Report of Composting Site Information (recycling; California) |
| RCSI | Receiver Channel State Information |
| RCSI | Reactor Coolant System Integrity |
| RCSI | Random Cooperative Strain Interaction |
| RCSI | Roadrunner Computer Systems, Inc. (Santa Fe, NM) |