| RALPH | Rapid And Logical Paper Handler 
| Others |
| RALPH | Rapidly Adapting Lateral Position Handler
| Others |
| RALPH | Real Assisted Living for Physically Handicapped
| Others |
| RALPH | Reduction and Acquisition of Lunar Pulse Heights
| Others |
| RALPH | Reentrant Algorithmic Language Processor with H
| Others |
| RALPH | Robotic Assembly Language Planning Hierarchy
| Others |
| RALPH | Robotic Assisted Laparoscopic Prostatectomy Heroes
| Others |