- Roy Brother
- Roy, I
- Roy, Indranil
- Roy, J
- Roy, J C
- Roy, J K
- Roy, J. Frank
- Roy, Jacob Jansz de,
- Roy, Jean
- Roy, Jessie, 1813-1885
- Roy, John
- Roy, Katherine Margaret
- Roy, Kevin
- Roy, Kylle
- Roy, Laurence D.
- Roy, Lise
- Roy, M K Dev
- Roy, M S
- Roy, Mishal
- Roy, P
- Roy, P S
- Roy, R
- Roy, R K
- Roy, Ranjit Kumar
- Roy, Roger
- Roy, Rup Kumar
- Roy, S
- Roy, S C
- Roy, Sharat Kumar, 1897-1962
- Roy, T. N.
- Roy, V. L. (Victor Leander), 1871-1968
- Roy, William
- Royal Agricultural and Commercial Society of British Guiana.
- Royal Agricultural and Commercial Society of British Guiana.
- Royal Agricultural Society of England.
- Royal agricultural society of Jamaica.
- Royal Anthropological Institute of Great Britain and Ireland
- Royal Aquarium (Great Britain)
- Royal Asiatic Society of Great Britain and Ireland.
- Royal Asiatic Society of Great Britain and Ireland. Ceylon Branch
- Royal Asiatic Society of Great Britain and Ireland. Malaysian Branch.
- Royal Asiatic Society of Great Britain and Ireland. North-China Branch.
- Royal Asiatic Society of Great Britain and Ireland. Straits Branch
- Royal Australasian Ornithologist's Union. Checklist Committee
- Royal Australasian Ornithologists' Union.
- Royal Belfast Flax Society.
- Royal Botanic Garden, Calcutta.
- Royal Botanic Garden, Edinburgh.
- Royal Botanic Gardens (Sydney, N.S.W.),
- Royal Botanic Gardens (Trinidad)
- Royal Botanic Gardens (Vic.)
- Royal Botanic Gardens, Kew.
- Royal Botanic Gardens, Kew. Herbarium
- Royal Botanic Society of London.
- Royal Botanical Gardens, Peradeniya.
- Royal Caledonian Horticultural Society.
- Royal Canadian Institute
- Royal Canadian Institute. Biological Section. Ornithological Sub-section.
- Royal College of Physicians of Edinburgh.
- Royal College of Physicians of Ireland.
- Royal College of Physicians of London.
- Royal College of Surgeons of Edinburgh.
- Royal College of Surgeons of Edinburgh. Museum.
- Royal College of Surgeons of England.
- Royal College of Surgeons of England. Museum.
- Royal College of Veterinary Surgeons.
- Royal Colonial Institute (Great Britain)
- Royal Commonwealth Society.
- Royal Dublin Society.
- Royal Eiland Nursery.
- Royal Entomological Society of London
- Royal Entomological Society of London. Library
- Royal Exotic Nursery.
- Royal Flower Gardens.
- Royal Gardens, Kew.
- Royal Geographical Society (Great Britain)
- Royal Geographical Society of Australasia (Queensland)
- Royal Geographical Society Of Australasia. South Australian Branch, Adelaide.
- Royal Highland and Agricultural Society of Scotland.
- Royal Horticultural Society (Great Britain)
- Royal Horticultural Society (Great Britain). Fruit Committee.
- Royal Horticultural Society (Great Britain). Tulip Nomenclature Committee.
- Royal Institute of Public Health.
- Royal Institution of Cornwall.
- Royal Institution of Great Britain.
- Royal Iris Gardens.
- Royal Irish Academy.
- Royal Microscopical Society (Great Britain)
- Royal Naval Bird Watching Society.
- Royal Oak Boxwood Farms.
- Royal Oak Farms,
- Royal Ontario Museum of Palaeontology.
- Royal Ontario Museum of Zoology and Palaeontology.
- Royal Ontario Museum of Zoology.
- Royal Ontario Museum.
- Royal Ontario Museum. Dept. of Ichthyology and Herpetology
- Royal Ontario Museum. Dept. of Ornithology.
- Royal Ontario Museum. Life Sciences Division.
- Royal Palm Nurseries.
- Royal Physical Society of Edinburgh.
- Royal Poinciana Nurseries Inc.
- Royal Scottish Arboricultural Society.
- Royal Society (Great Britain)
- Royal Society (Great Britain). Arctic Committee.
- Royal Society (Great Britain). Coral Reef committee
- Royal Society (Great Britain). Evolution Committee.
- Royal Society (Great Britain). Library.
- Royal Society (Great Britain). Museum.
- Royal Society for the Prevention of Cruelty to Animals.
- Royal Society for the Protection of Birds
- Royal Society of Arts (Great Britain)
- Royal Society of Arts and Sciences of Mauritius.
- Royal Society of Canada.
- Royal Society of Edinburgh.
- Royal Society of Medicine (Great Britain)
- Royal Society of New South Wales
- Royal Society of New Zealand.
- Royal Society of Queensland.
- Royal Society of South Africa.
- Royal Society of South Australia
- Royal Society of Tasmania.
- Royal Society of Van Diemen's Land
- Royal Society of Victoria (Melbourne, Vic.)
- Royal Society of Western Australia
- Royal Veterinary College (London, England)
- Royal Zoological Society of Ireland.
- Royal Zoological Society of New South Wales.
- Royall, Willis C
- Royappa, George
- Royar, Kimberly J.
- Royauté, Raphaël
- Roybal, Art
- Royce, Josiah
- Royce, Josiah, 1855-1916
- Royce, Lynn A
- Royce, R D
- Royce, Rodney D
- Royce, William F.
- Roychowdhury, Dipasree
- Roye, D B
- Roye, Ernest
- Royen, Adrianus van, 1704-1779
- Royen, P. van (Pieter)
- Royer, Charles, 1831?-1883
- Royer, J
- Royer, Johann.
- Royer, M
- Royer, M Ch
- Royer, M Charler
- Royer, M Charles
- Royer, Maurice
- Royer, R. P., Mrs.,
- Royer, Ronald A
- Royer, Todd V
- Royko, Dominik
- Royle, J Andrew
- Royle, J. Forbes (John Forbes), 1798-1858
- Roy-McDougall, Vanessa
- Royo Pla, Ferran
- Royo, Renato Marino.
- Roys, Chester C
- Roys, Lawrence, 1884-
- Roys, Shannon.
- Royston, Hanamoto, Alley & Abey.
- Royston, Robert.
- Royte, Joshua L.
- Royzenblat, Sonya
- Roza, Francisvaldo Amaral
- Roza-Gomes, Margarida Flores
- Rozaimi, M
- Rozane, Danilo
- Rozanov, A Y
- Rozário, Ezinete Moreira M. do
- Rozario, Marcal & Company,
- Rozas, Daniel
- Rozas, Enrique E.
- Rozbaczylo, N
- Rozbaczylo, Nicolas
- Rozbaczylo, Nicolás
- Roze, Ernest, 1833-1900
- Roze, James A
- Roze, Janis A., 1926-
- Rozeboom, L
- Rozeboom, L E
- Rozeboom, Lloyd E
- Rozefelds, A C
- Rozefelds, Andrew
- Rozefelds, Andrew C
- Rożej-Pabijan, Elżbieta
- Rozen, Barbara L
- Rozen, Jerome G. Jr. (Jerome George), 1928-
- Rozenberg, Tamir
- Rozendaal, Frank G
- Rozet, M. 1798-1858
- Rozhkov, N. P.,
- Rozhnov, Viatcheslav
- Rozier, François, 1734-1793
- Rozier, Jean-François
- Rozkosny, R
- Rozkošný, Rudolf
- Rozo, Daniel M.
- Rozo, Daniel Mauricio
- Rozo-Lopez, Paula
- Rozon, Christine
- Rózsahegyi, Aladár,
- Rozycki, R
- Rozycki, Rick
- Rozylowicz, Laurentiu
- Rozza, Adriana de Fátima
- Rozzi, Ricardo
- Rsquo
- Rua, Gabriel H
- Rua, Gabriel H.
- Rua, Gabriel Hugo
- Ruacho-González, Lizeth
- Ruamrungsri, S., & J. Uthai-Butra
- ruan, chang-chun
- Ruan, Yong-Ying
- Ruan, Yu-Qing
- Ruangsittichai, Jiraporn
- Ruano-Chamorro, Cristina
- Ruas, Claudete F.
- Ruas, Danilo
- Ruas, Eduardo Augusto
- Ruas, Paulo M.
- Ruault, Nicolas, 1742?-1828
- Ruback, Patricia A
- Rubakhin, Stanislav S
- Rubalcaba-Sil, Jose Luis
- Rubec, Clayton
- Rubec, Peter J.
- Rübel, A
- Rubel, Diana Nora
- Rübel, Eduard.
- Rubel, M
- Rubel, Madis
- Rubel, Robt. O., Jr.
- Rubel, Robt. O., Jr.,
- Rubem, AC.
- Ruben, L N
- Rubeni, Ephraim Ha
- Rubens, Ferdinand W.
- Rubenstein, Dustin R
- Rubenstein, Jesse
- Ruber, Lukas
- Ruberson, J R
- Rubert, Marceléia
- Rubert, Marceléia
- Rubery, Mark
- Rubesch, Joseph.