| R Project for Statistical Computing | R. R. Bowker |
| Rabbinical Assembly | Radcliffe Publishing Ltd |
| Radiation Research Society | Radical Humanist |
| Radical Philosophy Ltd | Radical Psychology |
| Radiological Society of North America | Radiological Society Of Pakistan |
| Raffles Museum of Biodiversity Research | Railway Technical Research Institute |
| Rajshahi University | Rajshahi University Zoological Society |
| Ralph F. Wilson | Rambam Health Care Campus |
| RAMS Consultants | Ramtrans Publishing |
| Rancho Santa Ana Botanic Garden | RAND Publications |
| Rand Afrikaans University | Randall Publishing, Inc. |
| Rapra Technology Ltd | Raptor Research Foundation |
| Rasayan Journal | Ray Publishing Inc. |
| Razi Institute for Drug Research | RCN Publishing Company |
| Readers Digest Association Inc | Reading Matrix, Inc. |
| Reality Publishing Company | Reason Foundation |
| Reason Papers | Reconstruction |
| Red de Revistas Cientificas de America Latina, El Caribe, Espana y Portugal | Red Hat, Inc |
| Red Herring, Inc | Rede de Pesquisa em Transportes |
| Rede Latino-Americana de Materiais | Reed Business Information |
| Reed Business Information - Belgium | Reference Center for Mathematical Modelling in Teaching |
| Refugee Studies Centre | Regent University |
| Regional Energy Resources Information Center | Regional Euro-Asian Biological Invasions Centre |
| Regional Information Center for Science & Technology | Regional Institute of Health and Family Welfare |
| Regional Science Association International | Regional Studies Association |
| Rehabilitation Engineering and Assistive Technology Society of North America | Rehabilitation Services Administration |
| Reliabilities Analysis Center | Religious History Society |
| Remedica Publishing Ltd. | Remote Sensing and Photogrammetry Society |
| Renaissance Forum | Renaissance Society of America |
| Reporters Committee for Freedom of the Press | Research and Information System for Developing Countries |
| Research and Practice | Research Capacity Building Network |
| Research Centre in Physical Activity, Health and Leisure | Research Centre in Public Administration and Public Services |
| Research Holdings Ltd | Research India Publications |
| Research Information Ltd | Research Institute For Endocrine Sciences |
| Research Institute for Mathematical Sciences | Research Institute of Pomology and Floriculture |
| Research Institute of Signal Processing | Research Journal of Pharmaceutical, Biological and Chemical Sciences |
| Research laboratory for Agricultural Biotechnology and Biochemistry | Research Laboratory for Archaeology and the History of Art |
| Research Money Inc. | Research Society of Anaesthesiology Clinical Pharmacology |
| Research Today Publications | Research Unit On International Security and Cooperation Complutense University |
| Reseaux | Reserve Bank of India |
| Resilience Alliance Publications | Resource Modeling Association |
| Respiratory Nursing Society | Rethinking Schools |
| Review of Economic Studies Ltd | Revista Brasileira de Cartografia |
| Revista Brasileira de Cirurgia Cardiovascular | Revista de Economía Institucional |
| Revista de Neurocirugia | Revista Emancipação |
| Revista Iberoamericana De Micología | Revues.Org |
| Rhode Island Medical Society | Rhodes University |
| Richard Ivey School of Business | Richards College of Business |
| Richards College of Business, University of West Georgia | Richmond Journal of Global Law and Business |
| Richmond Journal of Law & Technology | RIKEN (The Institute of Physical and Chemical Research) |
| Rila Publications Ltd | Rinton Press Inc |
| Risk Management Association | Risk Management Society Publishing, Inc |
| RJPT Publishing House | RMIT Publisher |
| RNA Society | Rob Lutz |
| Robotics Publications Ltd | Rochester Institute of Technology |
| Rockefeller University Press | Rockwell Automation |
| Rocky Mountain Modern Language Association | Rodale Press, Inc., |
| Rodman Publishing | Rodopi |
| Roger Williams University | Rogers Publications |
| Rogers Publishing Limited | Rogers Publishing Ltd |
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| Romanian Academy | Romanian Economic Journal |
| Romanian National Bibliotheca | Romanian Regional Science Association |
| Romanian Society for Applied Medical Informatics | Romanian Society for Reconstructive Microsurgery |
| Romanian Society of Anatomy | ROOF magazine |
| Rosetti Educational Publishing House | Rosicrucian Order, AMORC |
| Rossiskaia Gazeta | Rotman International Centre for Pension Management |
| Rough Notes Magazine | Routledge |
| Royal Aeronautical Society | Royal Anthropological Institute |
| Royal Astronomical Society | Royal Astronomical Society of Canada |
| Royal Australasian College of Physicians | Royal Australasian College of Surgeons |
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| Rural Sociology Society | Rushing Waters Ltd |
| Russell Publishing | Russia House |
| Russia in Global Affairs | Russian Academy of Sciences |
| Russian Journal of Earth Sciences | Rutgers Journal of Law and Religion |
| Rutgers University | Rutgers University Libraries |
| Ryerson University |
