| Acronym | Definition |
|---|
| RCCO➣Royal Canadian College of Organists (founded in 1909) |
| RCCO➣Residential Child Care Officer (UK) |
| RCCO➣Revenue Contributions to Capital Outlay (UK) |
| RCCO➣Reverse Current Cut Out |
| RCCO➣Research Conduct and Compliance Office (University of Pittsburgh; Pennsylvania) |