| Abbreviation | Definition |
|---|---|
| RSAD | Runway Safety Area Determination |
| RSAF | Republic of Singapore Air Force |
| RSAF | Rescue Squad Assistance Fund |
| RSAF | Royal Small Arms Factory |
| RSAO | Residenza Sanitaria Assistenziale Ospedaliera |
| RSAO | Reverberant Spatial Audio Object |
| RSAP | Rapid Site Access Program |
| RSAP | Rated Staff Allocation Plan |
| RSAP | Registered Substance Abuse Professional |
| RSAP | Remote Sim Access Profile |
| RSAP | Remote Sim Access Protocol |
| RSAP | Remote Status Alarm Panel |
| RSAP | Renoir Sucks At Painting |
| RSAP | Requirement Specific Acquisition Platform |
| RSAP | Requirement Specific Acquisition Program |
| RSAP | Retail Solutions Asia Pacific |
| RSAP | Retailer Standards Assessment Platform |
| RSAP | Rising Sophomore Abroad Program |
| RSAP | Roadside Safety Analysis Program |
| RSAP | Roscoe Snyder And Pacific |