| Radiology | RADIOLOGY | 0033-8419 |
| Radiology and Oncology | RADIOL ONCOL | 1318-2099 |
| Radiology Case Reports | RADIOLOGY CASE REPORTS | 1930-0433 |
| Radiology management | RADIOLOGY MANAGEMENT | 0198-7097 |
| Radiology Research and Practice | RADIOLOGY RESEARCH AND PRACTICE | 2090-1941 |
| Radiophysics and Quantum Electronics | RADIOPHYS QUANT EL+ | 0033-8443 |
| Radioprotection | RADIOPROTECTION | 0033-8451 |
| Radiotherapy and Oncology | RADIOTHER ONCOL | 0167-8140 |
| Radix | | 0165-4322 |
| Radovi Instituta za Povijest Umjetnosti | RADOVI INSTITUTA ZA POVIJEST UMJETNOSTI | 1845-4534 |
| Radovi Zavoda za povijesne znanosti HAZU u Zadru | | 1330-0474 |
| Radovi Zavoda za znanstveni rad Varaždin | RADOVI ZAVODA ZA ZNANSTVENI RAD VARAŽDIN | 0352-9509 |
| Radovi Zavoda za Znanstvenoistrazivacki i Umjetnicki Rad u Bjelovaru | RADOVI ZAVODA ZA ZNANSTVENOISTRAZIVACKI I UMJETNICKI RAD U BJELOVARU | 1846-9787 |
| Radovi-Zavoda za Hrvatsku Povijest | RADOVI-ZAVODA ZA HRVATSKU POVIJEST | 0353-295X |
| Radwaste Solutions | RADWASTE SOLUTIONS | 1529-4900 |
| Radzyński Rocznik Humanistyczny | | 1643-4374 |
| RAE-Revista de Administracao de Empresas | RAE-REV ADMIN EMPRES | 0034-7590 |
| RAEL-Revista Electronica de Linguistica Aplicada | RAEL-REVISTA ELECTRONICA DE LINGUISTICA APLICADA | 1885-9089 |
| Raffles Bulletin of Zoology | RAFFLES B ZOOL | 0217-2445 |
| Ragion Pratica | | 1720-2396 |
| RAIRO - Operations Research | RAIRO-OPER RES | 0399-0559 |
| RAIRO - Theoretical Informatics and Applications | RAIRO-THEOR INF APPL | 0988-3754 |
| Raisons Politiques | RAISONS POLITIQUES | 1291-1941 |
| Ramanujan Journal | RAMANUJAN J | 1382-4090 |
| Rambam Maimonides Medical Journal | RAMBAM MAIMONIDES MEDICAL JOURNAL | 2076-9172 |
| Ramon Llull Journal of Applied Ethics | RAMON LLULL JOURNAL OF APPLIED ETHICS | 2013-8393 |
| Ramus | | 0048-671X |
| RAND Journal of Economics | RAND J ECON | 0741-6261 |
| Random Matrices-Theory and Applications | RANDOM MATRICES-THEORY AND APPLICATIONS | 2010-3263 |
| Random Operators and Stochastic Equations | RANDOM OPERATORS AND STOCHASTIC EQUATIONS | 0926-6364 |
| Random Structures and Algorithms | RANDOM STRUCT ALGOR | 1042-9832 |
| Range Management and Agroforestry | RANGE MANAG AGROFOR | 0971-2070 |
| Rangeland Ecology & Management | RANGELAND ECOL MANAG | 1550-7424 |
| Rangeland Journal | RANGELAND J | 1036-9872 |
| Ranshao Kexue Yu Jishu/Journal of Combustion Science and Technology | RANSHAO KEXUE YU JISHU/JOURNAL OF COMBUSTION SCIENCE AND TECHNOLOGY | 1006-8740 |
| Rapid Communications in Mass Spectrometry | RAPID COMMUN MASS SP | 0951-4198 |
| Rapid Prototyping Journal | RAPID PROTOTYPING J | 1355-2546 |
| Rare Diseases | RARE DISEASES | 2167-549X |
| Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering | RARE METAL MAT ENG | 1002-185X |
| Rare Metals | RARE METALS | 1001-0521 |
| Rare Tumors | RARE TUMORS | 2036-3605 |
| Raritan | RARITAN-A QUARTERLY REVIEW | 0275-1607 |
| Rasayan Journal of Chemistry | RASAYAN JOURNAL OF CHEMISTRY | 0974-1496 |
| RASK: Internationalt tidsskrift for sprog og kommunikation | | 0909-8976 |
| RASP-Research on Ageing and Social Policy | RASP-RESEARCH ON AGEING AND SOCIAL POLICY | 2014-671X |
| Rasprave | | 1331-6745 |
| Rassegna della Letteratura Italiana | | 0033-9423 |
| Rassegna di Pedagogia: Pädagogische Umschau | | 0033-9571 |
| Rassegna di Psicologia | RASSEGNA DI PSICOLOGIA | 1125-5196 |
| Rassegna Europea di Letteratura Italiana | | 1122-5580 |
