| Records of Natural Products | REC NAT PROD | 1307-6167 |
| Records of the Australian Museum | REC AUST MUS | 0067-1975 |
| Records of the Australian Museum Supplement | RECORDS OF THE AUSTRALIAN MUSEUM SUPPLEMENT | 0812-7387 |
| Recreational Sports Journal | RECREATIONAL SPORTS JOURNAL | 1558-8661 |
| Recta | RECTA | 1575-605X |
| Recycling | RECYCLING | 2313-4321 |
| Red Cedar Review | RED CEDAR REVIEW | 0034-1967 |
| RED-Revista de Educacion a Distancia | RED-REVISTA DE EDUCACION A DISTANCIA | 1578-7680 |
| RED-Revista Electronica de Direito | RED-REVISTA ELECTRONICA DE DIREITO | 2182-9845 |
| Redes com-Revista de Estudios para el Desarrollo Social de la Comunicacion | REDES COM-REVISTA DE ESTUDIOS PARA EL DESARROLLO SOCIAL DE LA COMUNICACION | 1696-2079 |
| Redes de Ingenieria-Rompiendo las Barreras del Conocimiento | REDES DE INGENIERIA-ROMPIENDO LAS BARRERAS DEL CONOCIMIENTO | 2248-762X |
| REDHECS-Revista Electronica de Humanidades Educacion y Comunicacion Social | REDHECS-REVISTA ELECTRONICA DE HUMANIDADES EDUCACION Y COMUNICACION SOCIAL | 1856-9331 |
| Redia | REDIA-GIORNALE DI ZOOLOGIA | 0370-4327 |
| REDIMAT-Revista de Investigacion en Didactica de las Matematicas | REDIMAT-REVISTA DE INVESTIGACION EN DIDACTICA DE LAS MATEMATICAS | 2014-3621 |
| Redox Biology | REDOX BIOLOGY | 2213-2317 |
| Redox Report | REDOX REP | 1351-0002 |
| REDU-Revista de Docencia Universitaria | REDU-REVISTA DE DOCENCIA UNIVERSITARIA | 1696-1412 |
| Reference and User Services Quarterly | REF USER SERV Q | 1094-9054 |
| Reference Librarian | REFERENCE LIBRARIAN | 0276-3877 |
| Reference Services Review | REFERENCE SERVICES REVIEW | 0090-7324 |
| Reflective Practice | REFLECTIVE PRACTICE | 1462-3943 |
| Reflets et Perspectives de la Vie Economique | REFLETS ET PERSPECTIVES DE LA VIE ECONOMIQUE | 0034-2971 |
| Reflexe | | 0862-6901 |
| Reflexion Politica | REFLEXION POLITICA | 0124-0781 |
| REFLEXUS - Revista Semestral de Teologia e Ciências da Religião | REFLEXUS - REVISTA SEMESTRAL DE TEOLOGIA E CIÊNCIAS DA RELIGIÃO | 1982-0828 |
| Reformation | REFORMATION | 1357-4175 |
| Reformation and Renaissance Review | | 1462-2459 |
| Réforme, Humanisme, Renaissance | | 1771-1347 |
| Refractories and Industrial Ceramics | REFRACT IND CERAM+ | 1083-4877 |
| Refuat ha-peh veha-shinayim (1993) | REFUAT HA-PEH VEHA-SHINAYIM (1993) | 0792-9935 |
| Refuge | REFUGE | 0229-5113 |
| Refugee Survey Quarterly | REFUGEE SURVEY QUARTERLY | 1020-4067 |
| REGE-Revista de Gestao | REGE-REVISTA DE GESTAO | 1809-2276 |
| Regeneration | REGENERATION | 2052-4412 |
| Regenerative Biomaterials | REGENERATIVE BIOMATERIALS | 2056-3418 |
| Regenerative Engineering and Translational Medicine | REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE | 2364-4133 |
| Regenerative Medicine | REGEN MED | 1746-0751 |
| Regenerative Medicine Research | REGENERATIVE MEDICINE RESEARCH | 2050-490X |
| Regenerative Therapy | REGENERATIVE THERAPY | 2352-3204 |
| Region | REGION | 2409-5370 |
| Region et Developpement | REGION ET DEVELOPPEMENT | 1267-5059 |
| Regional and Federal Studies | REGIONAL AND FEDERAL STUDIES | 1359-7566 |
| Regional and Sectoral Economic Studies | REGIONAL AND SECTORAL ECONOMIC STUDIES | 1578-4460 |
| Regional Anesthesia and Pain Medicine | REGION ANESTH PAIN M | 1098-7339 |
| Regional Environmental Change | REG ENVIRON CHANGE | 1436-3798 |
| Regional Research of Russia | REGIONAL RESEARCH OF RUSSIA | 2079-9705 |
| Regional Science and Urban Economics | REG SCI URBAN ECON | 0166-0462 |
| Regional Science Inquiry | REGIONAL SCIENCE INQUIRY | 1791-5961 |
| Regional Science Policy and Practice | REGIONAL SCIENCE POLICY AND PRACTICE | 1757-7802 |
| Regional Statistics | REGIONAL STATISTICS | 2063-9538 |
