| Rank | Abbreviation | Meaning |
|---|
| ***** | RCAA | Radio Code Aptitude Area
| |
| **** | RCAA | Runs Created Above Average
| |
| *** | RCAA | Regional Clean Air Authority
| |
| *** | RCAA | Regiment of Canadian Artillery
| |
| *** | RCAA | Runs Created Against Average
| |
| *** | RCAA | Rehabilitation Counselling Association of Australasia
| |
| ** | RCAA | Retirement Compensation Arrangements Account
| |
| ** | RCAA | Rock Crawlers Association of America
| |
| ** | RCAA | Regional Commission on Airport Affairs
| |
| ** | RCAA | Royal Canadian Artillery Association
| |
| * | RCAA | Red de Cientificos Argentinos en Alemania
| |
| * | RCAA | Riverside Community Arts Association
| |
| * | RCAA | Rock Crawling Association of America
| |
| * | RCAA | Root Cause Alarm Analysis
| |
| * | RCAA | Rocket City Astronomical Association
| |
| * | RCAA | Redwood Coast Action Agency
| |
| * | RCAA | Research and Creative Activity Awards
| |
| * | RCAA | Regional Clean Air Agency
| |
| * | RCAA | Rankin County Arts Alliance
| |
| * | RCAA | Rutland County Archery Association
| |
| * | RCAA | Romanian Civil Aeronautical Authority
| |
| * | RCAA | Responsible Choices Action Agenda
| |
| * | RCAA | Resource Committee of Adopted Adults
| |
| * | RCAA | Responsible Choices for All Adults
| |
| * | RCAA | Radcliffe College Alumnae Association
| |