ZRL
| Acronym | Definition |
|---|---|
| ZRL | Zurich Research Laboratory |
| ZRL | Zero Risk Level |
| ZRL | Zweckverband Schienenpersonennahverkehr Ruhr-Lippe (German transportation system) |
| ZRL | Zambezi Resources, Ltd. (Zambia) |
| ZRL | Zambia Railways Ltd. (Kabwe, Zambia) |
| ZRL | Zero Reference Level (cardiography) |