| RCAA | Read Captions Across America 
| Others |
| RCAA | Rear Cross Traffic Collision Warning with Avoidance Assist
| Others |
| RCAA | Redcliffe City Amateur Anglers
| Others |
| RCAA | Redwood Community Action Agency
| Others |
| RCAA | Regional Commission on Airport Affairs
| Others |
| RCAA | Rehabilitation Counselling Association of Australasia
| Others |
| RCAA | ReNEW Cultural Arts Academy
| Others |
| RCAA | Responsibility Center Account Administrators
| Others |
| RCAA | Riverside Community Arts Association
| Others |
| RCAA | Rollins College Alumni Association
| Others |
| RCAA | Roy Chapman Andrews Academy
| Others |
| RCAA | Royal Cornwall Agricultural Association
| Others |
| RCAA | Runs Created Above Average
| Others |
| RCAA | Rwanda Civil Aviation Authority
| Others |