| Abbreviation | Definition |
|---|---|
| RSIC | Redstone Scientific Information Center |
| RSIC | Reno Sparks Indian Colony |
| RSIC | Resilient Sound Isolation Clips |
| RSID | Rural Special Improvements District |
| RSID | Ryerson School of Interior Design |
| RSIH | Rambo Sweet itch hoody |
| RSIH | Rubber Shoes in Hell |
| RSIH | Rumah Sakit Indonesia Hebron |
| RSIH | Rumah sakit intan husada |
| RSII | Russia–Syria–Iran–Iraq |
| RSIN | Rechtspersonen Samenwerkingsverbanden Informatie Nummer |
| RSIN | Revised Speech in Noise |
| RSIP | Radar System Improvement Program |
| RSIP | Realm Specific Internet Protocol |
| RSIP | Realm Specific IP Protocol |
| RSIP | Receiving Site Implementation Plan |
| RSIP | Regional Service Improvement Plan |
| RSIP | Repetitive Stress Injury Program |
| RSIP | Residential Sound Insulation Program |
| RSIP | ReVision Solar Impact Partners |