Professor Dr. Werner Rodolfo Greuter, (born February 27, 1938) in Genova, Italy, as a Swiss national, is a prominent botanist. He is well known as the chair of the Editorial Committee for the International Code of Botanical Nomenclature (ICBN) - both the previous St Louis Code (2000), and Tokyo Code (1994), but not the current Vienna Code (2006). His proposed policy as regards registration of botanical names proved unpopular and in 1999 he stepped back, not being elected anew: he merely completed his term as chair to be succeeded at Vienna in 2005. He has remained a member of the editorial committee, contributing to the 2011 renamed International Code of Nomenclature for algae, fungi, and plants, the "Melbourne Code" (2012).
He was appointed on April 1, 1978 to his current position: Professor of biology in the Institute of Biology at the Free University of Berlin, Germany, and First Director of the University's Botanic Garden and Botanical Museum (BGBM) in Berlin.
- OPTIMA Gold Medal, 1998.
- Distinguished Services Award, XVI International Botanical Congress, St Louis, Missouri
- Theophrastus Medal of Honour of the Hellenic Botanical Society, 2000
- Honorary Professorship (Categoría Docente Especial de Profesor Invitado), Universidad de La Habana, 2004
- McNeill, J.; Barrie, F.R.; Buck, W.R.; Demoulin, V.; Greuter, W.; Hawksworth, D.L.; Herendeen, P.S.; Knapp, S.; Marhold, K.; Prado, J.; Prud'homme Van Reine, W.F.; Smith, G.F.; Wiersema, J.H.; Turland, N.J. (2012). International Code of Nomenclature for algae, fungi, and plants (Melbourne Code) adopted by the Eighteenth International Botanical Congress Melbourne, Australia, July 2011. Regnum Vegetabile 154. A.R.G. Gantner Verlag KG. ISBN 978-3-87429-425-6.
- "Author Query for 'Greuter'". International Plant Names Index.
- Prof. Greuter's page on the The Botanic Garden and Botanical Museum Berlin-Dahlem (BGBM) web site
- Example of a combination published by Greuter: Dittrichia viscosa (L.) Greuter