| RACS | Radio Applications Cloud Server 
| Others |
| RACS | Rape and Abuse Crisis Service
| Others |
| RACS | Reading And Communication Skills
| Others |
| RACS | Recent Advances in Computer Systems
| Others |
| RACS | Refugee Advice Casework Service
| Others |
| RACS | Regulatory Affairs Certification Services
| Others |
| RACS | Rehab And Comfort Station
| Others |
| RACS | Remington Accessory Chassis System
| Others |
| RACS | Remote APDU Call Secure
| Others |
| RACS | Remote Automatic Calibration System
| Others |
| RACS | Repository for Annotations, Corpora and Schemas
| Others |
| RACS | Research Administration Certificate Series
| Others |
| RACS | Research Advanced Computing Services
| Others |
| RACS | Research in Adaptive and Convergent Systems
| Others |
| RACS | Resilient Adaptable Communications System
| Others |
| RACS | Resource and Admission Control Sub
| Others |
| RACS | Resource and Admission Control Subsystem
| Others |
| RACS | Revenue Accounting Collection System
| Others |
| RACS | Ridglan Animal Care Systems
| Others |
| RACS | Ripoff Anime Cutthroat Shop
| Others |
| RACS | Riser Annulus Condition System
| Others |
| RACS | Road Automobile Communication System
| Others |
| RACS | Rochester Academy Charter School
| Others |
| RACS | Roll and Attitude Control Subsystem
| Others |
| RACS | Rotation Axis Coordinate System
| Others |
| RACS | Royal Army Corps of Sahrani
| Others |
| RACS | Royal Arsenal Co-operative Society
| Others |
| RACS | Russian American Colony Singers
| Others |
| RACS | Russian American Community Services
| Others |