| RASA | Radionuclide Aerosol Sampler/Analyzer | 放射性核素气溶胶采样/分析器 |
| RASA | Russian Aviation and Space Agency (Former Rsa) | 俄罗斯航空航天局（前俄罗斯航天局） |
| RASA | Re-Configurable Annular Slot Antenna | 可重新配置的环形缝隙天线 |
| RASA | Realignment of Supply Activities | 供应活动的重新调整 |
| RASA | Rape and Sexual Abuse (women's support group) | 强奸和性的虐待妇女的支援小组 |
| RASA | Rotation Around a Stationary Axis | 绕固定轴旋转 |