- Raamets Jane
- Radwell A.J.
- Raga Adalton
- Ragusa Di Chiara Salvatore
- Ragusa Ernesto
- Ragusa Salvatore
- Rahiminejad Vahid
- Rahmani Hasan
- Rahmani, H.
- Rahmani Piyani Atefeh
- Raissi Ardali M.
- Rajabpour A.
- Rajaee Fahimeh
- Rajakaruna R.S.
- Rajasegaran Praveena
- Rakhleeva Anna A.
- Ramalho Francisco S.
- Ramamurthy V.V.
- Ramani Neravathu
- Ramani Neravathu
- Ramilo David W. R.
- Ramírez-Godoy Augusto
- Ramírez Martín J
- Ramji Mohamad Fizl Sidq
- Ramos de Melo João Paulo
- Ramos Felipe A. M.
- Ramroodi S.
- Ranju R.S.
- Raspotnig G.
- Raspotnig Günther
- Ravan Sultan
- Razmjou Jabraeil
- Recht Eitan
- Reda A.S.
- Reeves Will K
- Reeves Will K
- Rego Ryan O M
- Rehman Muneeb Ur
- Reinbacher Lara
- Reis P.R.
- Ren Guo-Ru
- Renner Tanya
- Revelo-Tobar Harol
- Reybroeck Eva
- Reyes Lerma Azucena Claudia
- Reyes Novelo E.A.
- Rezende J.M.
- Rezende José Marcos
- Riahi E.
- Riahi Elham
- Riddick Eric W
- Riggins Nia
- Risterucci A.-M.
- Robbins Richard G.
- Robertson S.H.
- Rocio Oliva
- Roczen-Karczmarz M.
- Rodrigo Eugenia
- Rodríguez David
- Rodriguez Sergio E
- Rojas-Espinoza Francisco Jose
- Romero-Rosales Felipe
- Round Philip D
- Roustaee A.M.
- Roy L
- Roy Somnath
- Rożej-Pabijan Elżbieta
- Rueda-Ramírez Diana
- Russo Romina M
- Ryabinin N.A.
- Rybalov Leonid B
- Ryckewaert Philippe