| RSPA | Radar Signature Reuction Program 
| Others |
| RSPA | Raising Standards of Pensions Administration
| Others |
| RSPA | Ranch Sorting And Penning Association
| Others |
| RSPA | Ranch Sorting Penning Association
| Others |
| RSPA | Rapids School of Performing Arts
| Others |
| RSPA | Really Simple PHP and Ajax
| Others |
| RSPA | Recreational Slo Pitch Association
| Others |
| RSPA | Research and Special Program Administration
| Others |
| RSPA | Research and Special Programs Administration
| Others |
| RSPA | Research and Special Projects Administration
| Others |
| RSPA | Research Sponsored Programs Accounting
| Others |
| RSPA | Restricted Stock Purchase Agreement
| Others |
| RSPA | Retail Solutions Providers Association
| Others |
| RSPA | Ridgefield Studio of Performing Arts
| Others |