| R P Athanase de Sainte Agnes |
| R. A. Tsanoff |
| R. W. Weaver; Scott Angle; Peter Bottomley; David Bezdiecek; Scott Smith; Ali Tabatabai; Art Wollum |
| R.C. Moberly |
| R.E.M. |
| R.Harré |
| R.Newton Flew |
| R.R. Williams |
| Raabe, Wilhelm |
| Rackham, Arthur |
| Raebburne Seeley Heimbeck |
| Ragon, Michel |
| Rajah, Carol Selva & Wickramasinghe, Priya |
| Ralph M. McInerny (ed) |
| Ralph, Brenda Ralph and Matthews, Ruipert |
| Ramsar Convention Bureau |
| Ramsland, John |
| Randle, Kevin D., Estes, Russ, and Cone, William P. |
| Randles, Roma |
| Ranke-Heinemann |
| Ransmayr, Christoph |
| Ransome, Arthur |
| Raphals, Lisa |
| Raschke, Carl |
