| Acronym | Sense | Language | Topics |
|---|---|---|---|
| RCO | Rencontres de Chimie Organique | In French | → Congresses → Organic chemistry |
| RCO | Radio Comptoir de l'Ouest | In French | → Trade → Electronics |
| RCO | Rugby Club Orléans (www.rcorleans.com) | In French | → Organizations and associations → Football and rugby → France |
| RCO | Rencontres Chimiques de l'Ouest | In French | → Congresses → Chemistry |
| RCO | Renseignement Contraignant sur l'Origine | In French | → Trade |
| RCO | Rugby Club Orangeois | In French | → Organizations and associations → Football and rugby |
| RCO | Retraite Complémentaire Obligatoire | In French | → Insurance → Labour, labour economics |