| Mr. Ilya E. Smelansky | Conservation and restoration, Land and sea use, Terrestrial ecosystems | Europe and Central Asia |
| Prof. Pete Smith | Land and sea use, Climate change, Agriculture | |
| Prof. Pete Smith | Land and sea use, Climate change, Agriculture | |
| Dr. Margaret (Peggy) Smith | Indigenous and local knowledge, Terrestrial ecosystems, Governance/Political ecology/Political sciences | |
| Jessica Smith | Freshwater ecosystems, Terrestrial ecosystems, Governance/Political ecology/Political sciences | |
| Mr. Britaldo Soares Filho | ||
| Mr. Jorge Soberon | ||
| Prof. Cosimo Solidoro | Europe and Central Asia | |
| Mr. Yowhan Son | Asia-Pacific | |
| Eng. Jean Fanny Sonkoue | Environmental and sustainability sciences, Behaviour and values, Policy making | Africa |
| Dr. Laura Sonter | ||
| Prof. Isabel Sousa Pinto | Conservation and restoration, Environmental and sustainability sciences, Marine systems | |
| Prof. Isabel Sousa Pinto | Conservation and restoration, Environmental and sustainability sciences, Marine systems | |
| Prof. Isabel Sousa Pinto | Conservation and restoration, Environmental and sustainability sciences, Marine systems | |
| Prof. Isabel Sousa Pinto | Conservation and restoration, Environmental and sustainability sciences, Marine systems | |
| Prof. Isabel Sousa Pinto | Conservation and restoration, Environmental and sustainability sciences, Marine systems | |
| Prof. Isabel Sousa Pinto | Conservation and restoration, Environmental and sustainability sciences, Marine systems | Europe and Central Asia |
| Prof. Isabel Sousa Pinto | Conservation and restoration, Environmental and sustainability sciences, Marine systems | |
| Prof. Isabel Sousa Pinto | Conservation and restoration, Environmental and sustainability sciences, Marine systems | |
| Prof. Isabel Sousa Pinto | Conservation and restoration, Environmental and sustainability sciences, Marine systems | |
| Prof. Isabel Sousa Pinto | Conservation and restoration, Environmental and sustainability sciences, Marine systems | |
| Prof. Isabel Sousa Pinto | Conservation and restoration, Environmental and sustainability sciences, Marine systems | |
| Mr. Álvaro Soutullo | Americas | |
| Dr. Claudiana Souza | Ecosystem services, Climate change, Environmental and sustainability sciences | |
| Mr. Robert Spaull | ||
| Ms. Christie Spence | ||
| Prof. Marja Spierenburg | Ecosystem services, Human ecology and cultural ecology, Agriculture | |
| Dr. Kevin St. Martin | Human geography, Marine systems, Governance/Political ecology/Political sciences | |
| Prof. Ljubiša Stanisavljević | Pollination, Systematics, taxonomy and phylogenetics, Environmental and sustainability sciences | |
| Dr. Elke Stehfest | Land and sea use, Land degradation, Climate change | |
| Nadja Steiner | ||
| Ms. Marie Stenseke | Human geography | |
| Ms. Marie Stenseke | Human geography | |
| Ms. Marie Stenseke | Human geography | |
| Ms. Marie Stenseke | Human geography | |
| Ms. Marie Stenseke | Human geography | Europe and Central Asia |
| Ms. Marie Stenseke | Human geography | |
| Ms. Marie Stenseke | Human geography | |
| Ms. Desiree Stephen | ||
| Ms. Anne Sophie Stevance | Environmental and sustainability sciences, Governance/Political ecology/Political sciences, Science and technology studies | |
| Prof. Andy Stirling | Governance/Political ecology/Political sciences, Sociology/Environmental sociology and anthropology, Science and technology studies | |
| Amb Peter Stoett | Law/Environmental policy and law, Governance/Political ecology/Political sciences, Contribution to IPCC (past or on-going) | |
| Amb Peter Stoett | Law/Environmental policy and law, Governance/Political ecology/Political sciences, Contribution to IPCC (past or on-going) | |
| Håkon B. Stokland | ||
| Håkon B. Stokland | ||
| Ms. Ingunn Storrø | ||
| Ms. Ingunn Storrø | Europe and Central Asia | |
| Mrs. Kalina Stoyanova | Evolution/Extinctions/Genetics and ecology of wild species, Plant diversity | |
| Mr. Bernardo Strassburg | Climate change | |
| Mr. Bernardo Strassburg | Climate change | |
| Mr. Bernardo Strassburg | Climate change | |
| Ms. Angela Strecker | ||
| Prof. Lindsay Stringer | Agriculture, Land degradation, Climate change | |
| Prof. Lindsay Stringer | Agriculture, Land degradation, Climate change | Africa |
| Mr. Avelino Suarez Rodriguez | Ecology/Species interactions and interrelationships, Ecosystem services, Terrestrial ecosystems | Americas |
| Prof. Youngbae Suh | Evolution/Extinctions/Genetics and ecology of wild species, Plant diversity | |
| Prof. Youngbae Suh | Evolution/Extinctions/Genetics and ecology of wild species, Plant diversity | Asia-Pacific |
| Prof. Youngbae Suh | Evolution/Extinctions/Genetics and ecology of wild species, Plant diversity | |
| Prof. Youngbae Suh | Evolution/Extinctions/Genetics and ecology of wild species, Plant diversity | |
| Prof. Youngbae Suh | Evolution/Extinctions/Genetics and ecology of wild species, Plant diversity | |
| Prof. Raman Sukumar | ||
| Prof. William Sutherland | Agriculture, Economics (Ecological and environmental economics etc), Human ecology and cultural ecology | |
| Mr. Gerardo Suzan | ||
| Mr. Nicolai Svidinskiy | ||
| Dr. Lilian Chua Swee Lian | ||
| Ms. Hajnalka Szentgyörgyi | Ecology/Species interactions and interrelationships, Ecosystem services | |
| Mr. Yasuo Takahashi | Ecosystem services, Environmental and sustainability sciences, Geography | |
| Mr. Yasuo Takahashi | Ecosystem services, Environmental and sustainability sciences, Geography | Asia-Pacific |
| Ms. Noriko Takamura | Conservation and restoration, Ecology/Species interactions and interrelationships, Freshwater ecosystems | Asia-Pacific |
| Mr. Zharas Takenov | Climate change, Environmental and sustainability sciences | Europe and Central Asia |
| Mr. Kazuhiko Takeuchi | Asia-Pacific | |
| Mr. Hisatomo Taki | ||
| Mr. Mohamed Talaat El Hennawy | ||
| Prof. Mohammed Sghir Taleb | Ecology/Species interactions and interrelationships, Plant diversity, Terrestrial ecosystems | |
| Prof. Mohammed Sghir Taleb | Ecology/Species interactions and interrelationships, Plant diversity, Terrestrial ecosystems | |
| Prof. Mohammed Sghir Taleb | Ecology/Species interactions and interrelationships, Plant diversity, Terrestrial ecosystems | |
| Prof. Mohammed Sghir Taleb | Ecology/Species interactions and interrelationships, Plant diversity, Terrestrial ecosystems | Africa |
| Prof. Mohammed Sghir Taleb | Ecology/Species interactions and interrelationships, Plant diversity, Terrestrial ecosystems | |
| Mr. Jakhongir Talipov | Environmental and sustainability sciences, Climate change, Agriculture | |
| Dr. Heather Tallis | Ecosystem services, Natural resource management, Behaviour and values | |
| Mr. Gautam Talukdar | Climate change, Ecosystem services, Natural resource management | Asia-Pacific |
| Ms. Ayfer Tan | ||
| Ms. Elda Viviana Tancredi | ||
| Mrs. Olena Tarasova-Krasiieva | ||
| Prof. David Tarkhnishvili | Evolution/Extinctions/Genetics and ecology of wild species, Systematics, taxonomy and phylogenetics, Ecology/Species interactions and interrelationships | |
| Prof. David Tarkhnishvili | Evolution/Extinctions/Genetics and ecology of wild species, Systematics, taxonomy and phylogenetics, Ecology/Species interactions and interrelationships | |
| Dr. Geraud Canis Tasse Taboue | Conservation and restoration, Animal diversity, Ecology/Species interactions and interrelationships | |
| Mr. Jacques Tassin | Ecology/Species interactions and interrelationships, Environmental ethics and philosophy, Invasive Alien Species | Africa |
| Mr. Kasim Tatic | ||
| Mr. Alifereti Tawake | Conservation and restoration, Behaviour and values | |
| Mr. Mohamed Tawfic Ahmed | Ecosystem services, Environmental and sustainability sciences | |
| Mr. Mohamed Tawfic Ahmed | Ecosystem services, Environmental and sustainability sciences | Africa |
| Dr. Rady Tawfik | Economics (Ecological and environmental economics etc), Ecosystem services, Environmental and sustainability sciences | |
| Awitazi Tchagou | ||
| Mr. Ben Ten Brink | ||
| Mr. Ben Ten Brink | ||
| Mr. Ben Ten Brink | ||
| Mr. Ben Ten Brink | Europe and Central Asia | |
| Dr. Fasil Tena | Agriculture, Natural resource management, Policy making | |
| Dr. Gabi Teren | Ecology/Species interactions and interrelationships | |
| Dr. Taita Terer | Conservation and restoration, Ecology/Species interactions and interrelationships, Evolution/Extinctions/Genetics and ecology of wild species | Africa |
| Prof. Mette Termansen | ||
| Ms. Azime Tezer | ||
| Mr. Randolph Thaman | Asia-Pacific | |
| Dr. Dave Thau | Science and technology studies, Techniques and measurements | |
| Dr. Olivier Thebaud | ||
| Mr. Spencer Thomas | ||
| Mr. Spencer Thomas | ||
| Ms. Kimisha Thomas | ||
| Mr. Spencer Thomas | ||
| Mr. Spencer Thomas | ||
| Dr. Stephanie Thomas | Health (public health, academic and non-academic, national and international), Climate change, Invasive Alien Species | |
| Mr. Spencer Thomas | ||
| Mr. Spencer Thomas | Americas | |
| Ms. Helen Thompson | ||
| Ms. Laura Thompson | Americas | |
| Dr. Wilfried Thuiller | Conservation and restoration, Ecology/Species interactions and interrelationships, Scenarios and/or models | |
| Dr. Wilfried Thuiller | Conservation and restoration, Ecology/Species interactions and interrelationships, Scenarios and/or models | |
| Mr. San Thwin | Natural resource management | |
| Mr. San Thwin | Natural resource management | Asia-Pacific |
| Mr. San Thwin | Natural resource management | |
| Mr. San Thwin | Natural resource management | |
| Dr. Yu Tian | ||
| Dr. Tamara Ticktin | ||
| Mr. Alou Adamou Didier Tidjani | Africa | |
| Dr. Hyacinthe Tié | Environmental and sustainability sciences, Freshwater ecosystems, Policy making | |
| Dr. Rachel Tiller | Governance/Political ecology/Political sciences, Law/Environmental policy and law, Scenarios and/or models | |
| Dr. Maria Tirado | Agriculture, Environmental and sustainability sciences, Policy making | |
| Dr. Maria Tirado | Agriculture, Environmental and sustainability sciences, Policy making | |
| Dr. Luis Tito De Morais | Ecology/Species interactions and interrelationships, Marine systems, Natural resource management | Africa |
| Prof. Derek Tittensor | ||
| Prof. Derek Tittensor | ||
| Prof. Pablo Tittonell | Agriculture, Ecosystem services, Natural resource management | |
| Mr. Chuluun Togtohyn | Asia-Pacific | |
| Mr. Chuluun Togtohyn | ||
| Prof. 中静 透 Tohru | Ecology/Species interactions and interrelationships, Ecosystem services, Terrestrial ecosystems | Asia-Pacific |
| Dr. Kanae Tokunaga | ||
| Ms. Praopan Tongsom | ||
| Ms. Katalin Török | Conservation and restoration, Ecology/Species interactions and interrelationships, Ecosystem services | |
| Ms. Katalin Török | Conservation and restoration, Ecology/Species interactions and interrelationships, Ecosystem services | |
| Ms. Katalin Török | Conservation and restoration, Ecology/Species interactions and interrelationships, Ecosystem services | |
| Ms. Katalin Török | Conservation and restoration, Ecology/Species interactions and interrelationships, Ecosystem services | |
| Ms. Katalin Török | Conservation and restoration, Ecology/Species interactions and interrelationships, Ecosystem services | |
| Ms. Katalin Török | Conservation and restoration, Ecology/Species interactions and interrelationships, Ecosystem services | |
| Ms. Katalin Török | Conservation and restoration, Ecology/Species interactions and interrelationships, Ecosystem services | |
| Ms. Katalin Török | Conservation and restoration, Ecology/Species interactions and interrelationships, Ecosystem services | |
| Mr. Péter Tóth | Conservation and restoration, Agriculture, Animal diversity | |
| Ms. Wendy Rae Townsend | Americas | |
| Ms. Wendy Rae Townsend | ||
| Dr. Anna Trakhtenbrot | ||
| Ms. Diem Hong Tran | ||
| Ms. Ana Travizi | ||
| Mr. Stadler Trengove | ||
| Dr. Elena Tricarico | Freshwater ecosystems, Natural resource management, Invasive Alien Species | |
| Dr. Christopher Trisos | Climate change | |
| Prof. Yongyut Trisurat | Ecosystem services, Terrestrial ecosystems | Asia-Pacific |
| Prof. Yongyut Trisurat | Ecosystem services, Terrestrial ecosystems | |
| Prof. Yongyut Trisurat | Ecosystem services, Terrestrial ecosystems | |
| Dr. Michel Trommetter | Economics (Ecological and environmental economics etc), Law/Environmental policy and law | |
| Dr. Michel Trommetter | Economics (Ecological and environmental economics etc), Law/Environmental policy and law | |
| Mr. Andreas Troumbis | Europe and Central Asia | |
| Elizabeth Troutt | Americas | |
| Ms. Ntakadzeni Tshidada | ||
| Dr. Kazuaki Tsuchiya | ||
| Dr. Ana Paula Turetta | Agriculture, Ecosystem services, Environmental and sustainability sciences | |
| Dr. Francis Turkelboom | Agriculture, Ecosystem services, Governance/Political ecology/Political sciences | Europe and Central Asia |
| Mr. Murat Türkes | ||
| Dr. Ant Türkmen | Conservation and restoration, Ecology/Species interactions and interrelationships, Marine systems | |
| Prof. Chris Turney | Climate change, Environmental and sustainability sciences, Invasive Alien Species | Asia-Pacific |
| Prof. Esther Turnhout | Science and technology studies, Governance/Political ecology/Political sciences, Sociology/Environmental sociology and anthropology | |
| Prof. Esther Turnhout | Science and technology studies, Governance/Political ecology/Political sciences, Sociology/Environmental sociology and anthropology | |
| Prof. Esther Turnhout | Science and technology studies, Governance/Political ecology/Political sciences, Sociology/Environmental sociology and anthropology | |
| Prof. Esther Turnhout | Science and technology studies, Governance/Political ecology/Political sciences, Sociology/Environmental sociology and anthropology | |
| Prof. Esther Turnhout | Science and technology studies, Governance/Political ecology/Political sciences, Sociology/Environmental sociology and anthropology | |
| Mr. Jozef Turok | Europe and Central Asia | |
| Dr. Gemedo Dalle Tussie | Conservation and restoration, Ecology/Species interactions and interrelationships, Ecosystem services | |
| Dr. Ronald Twongyirwe | Environmental and sustainability sciences, Agriculture, Land degradation | |
| Dr. Marcela Uhart | Animal diversity, Epidemiology, Conservation and restoration | |
| Dr. Paula Ungar | History/Environmental history, Governance/Political ecology/Political sciences | |
| Ms. Mimi Urbanc | Environmental and sustainability sciences, Geography, Human geography | Europe and Central Asia |
| Jelena Uros | ||
| Dr. Andressa V. Mansur | Environmental and sustainability sciences, Interdisciplinary studies | |
| Dr. Davina Vačkářová | Ecosystem services, Environmental and sustainability sciences | |
| Mr. Adalberto Val | Freshwater ecosystems, Animal diversity, Physiology | |
| Dr. Mariana Vale | Climate change, Ecology/Species interactions and interrelationships, Conservation and restoration | |
| Ms. Ali Zade Valida | Climate change, Ecosystem services, Plant diversity | Europe and Central Asia |
| Dr. Mireia Valle | Climate change, Ecology/Species interactions and interrelationships, Marine systems | Americas |
| Ms. Noelia Vallejo Pedregal | ||
| Dr. Améline Vallet | ||
| Ms. Marjan Van Den Belt | ||
| Ms. Marjan Van Den Belt | ||
| Ms. Marjan Van Den Belt | ||
| Mr. Dan Van Der Horst | ||
| Dr. Theo Van Der Sluis | Ecology/Species interactions and interrelationships, Governance/Political ecology/Political sciences, Natural resource management | Europe and Central Asia |
| Dr. Tiff van Huysen | ||
| Dr. Albert Van Jaarsveld | ||
| Mr. Meine Van Noordwijk | Agriculture, Ecosystem services, Environmental and sustainability sciences | |
| Dr. Mark van Oorschot | Environmental and sustainability sciences, Ecosystem services, Ecology/Species interactions and interrelationships | |
| Dr. Alexander van Oudenhoven | Ecosystem services, Environmental and sustainability sciences | Europe and Central Asia |
| Dr. Adam Vanbergen | Ecology/Species interactions and interrelationships, Ecosystem services, Pollination | Europe and Central Asia |