| Acronym | Meaning |
| RAC | Radar Area Correlation |
| RAC | Radar Azimuth Converter |
| RAC | Radiation Advisory Committee (EPA) |
| RAC | Radiation Advisory Committee (Oregon) |
| RAC | Radio Astronomy Controller |
| RAC | Rapid Action Change |
| RAC | Raw Agricultural Commodity |
| RAC | Reactor Accident Calculation |
| RAC | Readiness Acceptance Check |
| RAC | Readiness Assistance Conservation |
| RAC | Rear Admiral Commanding (US Navy) |
| RAC | Reception and Care (disaster care) |
| RAC | Recovery Audit Contractors (CMS, Medicare program) |
| RAC | Recreation Advisory Council (various locations) |
| RAC | Recreation Aquatic Center (various organizations) |
| RAC | Recuperation and Care Unit (FDNY) |
| RAC | Red Army Choir (Russia) |
| RAC | Redmond Arts Commission (Redmond, WA) |
| RAC | Refueling Area Commander |
| RAC | Refund Anticipation Check (tax refund) |
| RAC | Regional Activity Center |
| RAC | Regional Adjudication Center (US immigration) |
| RAC | Regional Affairs Committee (various locations) |
| RAC | Regional Air Commander |
| RAC | Regional Area Coordinator |
| RAC | Regional Assistance Committee (US FEMA) |
| RAC | Regulatory Appeals Committee |
| RAC | Rehab and Care (FDNY unit) |
| RAC | Remedial Action Coordinator (US FEMA) |
| RAC | Remote Access Computer |
| RAC | Repair Action |
| RAC | Reporting Activity Code |
| RAC | Request Altitude Change |
| RAC | Resident Advocate Committee (Iowa) |
| RAC | Resident Agent in Charge |
| RAC | Residual Asphalt Content (various locations) |
| RAC | Response Action Coordinator |
| RAC | Retirement Annuity Contract (UK) |
| RAC | Rigid Array Carrier (space shuttle) |
| RAC | Risk Assessment Code |
| RAC | Risk Assessment Council |
| RAC | Riverine Assault Craft |
| RAC | Royal Air Command |
| RAC | Royal Air Corps |
| RAC | Royal Armoured Corps |
| RAC | Rubber Allocation Committee (US Navy) |
| RAC | Rules Advisory Committee (Oregon) |
| RAC | Rules of the Air and Traffic Services |