R4D
| Acronym | Definition |
|---|---|
| R4D | Research for Development (research program database) |
| R4D | Race for Dignity (Dignitas Youth; various universities; Canada) |
| R4D | Research for Design |
| R4D | Ready for Distribution |
| R4D | Response, Resistance, Resilience and Recovery of Arctic ecosystems to Disturbance (USA) |