| Acronym | Definition |
|---|
| ROSO➣Return of Service Obligation (Australia) |
| ROSO➣Recherche Opérationnelle Sud Ouest (French: South West Operational Research; Switzerland) |
| ROSO➣Royal Oman Symphony Orchestra (est. 1987) |
| ROSO➣Removal of Silicone Oil (ophthalmology) |