| Acronym | Definition |
|---|
| RTCL➣Real-Time Closed-Loop (orbital science) |
| RTCL➣Real-Time Computing Laboratory (research group; University of Michigan) |
| RTCL➣Real Time Compatibility Layer |
| RTCL➣Reuters Technology China Ltd. |
| RTCL➣Run Time Client Lite (software; IBM Corp.) |
| RTCL➣Real Time Command Language |
| RTCL➣Real Time Control Logic |