- Terry, Emily Hitchcock, 1838-1921
- Terry, F. W.
- Terry, H. A.
- Terry, John Ridge, 1878-
- Terry, Judith S.
- Terry, Martin
- Terry, Michael G. W.
- Terry, R. Paul
- Terry, Rachel
- Terry, Randall G.
- Terry, Richard D.
- Terry, Richard E
- Terry, T. B. (Theodore Brainard), 1843-1916
- Terry, William A
- Terry-Holden Expedition (1937)
- Terryn, Yves
- Terry'S Experimental Farm,
- Tertrin, Paul
- Tertsch, Hermann
- Tertsch, Rudolf.
- Teruel, Rolando
- Teruel, Santiago
- Teruya, Shinnosuke
- Teruzzi, G
- Teruzzi, Giorgio
- Terver, Ange-Paulin.
- Tervonen, Kaisa
- Terwilliger, Nora B.
- Terwilliger, Robert C.
- Terzian, Levon A
- Terzis, T
- Terzo, Michaël
- Tesar, Frank J.
- Tesar, Rogene, 1938-
- Tesar, Zdenek
- Tescari, Giuseppe
- Tesch, Fabio
- Tesch, J. J. (Johan Jacob), 1877-1954
- Tesch, Pieter.
- Tesch, S. D.
- Teschemacher, James E. (James Englebert), 1790-1853
- Tesfaye, Genanaw
- Teshima, Fernanda Ayumi
- Tešitel, Jakub
- Těšitel, Jakub
- Těšitelová, Tamara
- Teske, Andreas
- Teskey, H. J.
- Teslan, Kenneth S.
- Tesmer, Curt.
- Teso, S. Valeria
- Teso, Valeria
- Tesón, Eliseo
- Tesorieri, Italo
- Tesoriero, Jem
- Tessa, Giulia
- Tessari-Zampieri, Maria Cristina
- Tessaro, Lucélia
- Tessaro, Stacey V.
- Tessens, Bart
- Tessien, H.
- Tessier, Alexandre Henri, 1741-1837
- Tessier, Gaston D.
- Tessier, Jack T
- Tessier, Nathalie
- Tessier, Tessier
- Tessler, Michael
- Tessler, Moysés Gonsalez
- Test, Frederick Cleveland
- Testa, Jacqueline
- Testa, Ron
- Testa, Samuel
- Testa, V.
- Testa, Viviane
- Testé Lozano, Ernesto
- Tester, Albert L
- Tester, John R.
- Tester, Mark
- Tester, Patricia A.
- Testerman, John K
- Testo, Weston L
- Teston, José Augusto
- Testoni, Daniel
- Testoni, Luana Naves
- Testud, Anne-Marie
- Testut, L. (Léo), 1849-1925
- Teta, Pablo
- Tetali, P.
- Tetali, Sujata
- Tetart, Jacques
- Tetens Nielsen, Astrid
- Tetens Nielsen, Erik
- Tetens, H.
- Tetenyi, Peter
- Teter, Harold E.,
- Teteryuk, Ludmila
- Tether & Don (Firm)
- Tether Seed Co.
- Tether, Rob B.
- Tetirick, J. Willis.
- Tetley Nurseries.
- Tetley, M. I.
- Tetley, Richard.
- Tetlie, Odd Erik
- Tetlow, Henry.
- Teton County Conservation District.
- Tetra Tech, inc.
- Tetrault, Kim
- Tetreault, Françoise
- Tétry, Andrée
- Tétry, Andrée, 1907-1992
- Tetsana, Naiyana
- Tetsuo, Harada
- Tettelbach, Stephen T.
- Têtu, Horace, 1842-1915
- Tetu, Sasha G
- Tetzner, Wilhelm.
- Teuber, Nolberto
- Teubner, B. G. (Benediktus Gotthelf), 1784-1856
- Teuchert, R. W.
- Teufel, Conrad, III
- Teugels, Guy G.
- Teulon, David
- Teunissen, Herman, 1914-1992
- Teuscher, David.
- Teuscher, Henry 1891-1984
- Teutli León, María M.
- Teutli-Hernández, Claudia
- Teutsch-Felber, Dorothea
- Tevesz, Michael J. S.
- Tevis, Lloyd P. (Lloyd Pacheco), 1916-
- Tevis, William S., jr.
- Tew, John
- Tew, Richard W.
- Tew, Ronald K.
- Tewari, B. S.
- Tewari, P. K.
- Tewari, R. B.
- Tewari, V. K.
- Tewes, Lisa Johanna
- Tewinkel, Lois E
- Tews, Anne
- Tews, Jörg
- Tex, E. Den
- Texas A & M University
- Texas A & M University. Dept. of Oceanography.
- Texas A. and M. Research Foundation.
- Texas Academy of Science.
- Texas Agricultural Experiment Station.
- Texas Cactus and Novelty Company.
- Texas Christian University.
- Texas Forest Service.
- Texas Medical Center.
- Texas Nursery Company (Sherman, Tex.)
- Texas Ornithological Society.
- Texas Pecan Nursery.
- Texas Research Foundation (Renner)
- Texas Rose Farms.
- Texas Rose Garden.
- Texas Seed & Plant Co.
- Texas Seed and Floral Co.
- Texas Seed and Floral Company.
- Texas Seed Breeding Farms.
- Texas Seed House.
- Texas Seed Pecan Co.
- Texas Tech University. Graduate School
- Texas Tech University. Museum,
- Texas Tech University. Natural Science Research Laboratory.
- Texas.
- Texas. Dept. of Agriculture, Insurance, Statistics and History.
- Texas. Dept. of education.
- Texas. Fish and oyster commissioner.
- Texas. Game, Fish, and Oyster Commission.
- Texas. Parks and Wildlife Department.
- Texas. State Board for Vocational Education.
- Texas. State Seed and Plant Board,
- Texeira, R. H. F.
- Texidor y Cos, Juan
- Teyke, Thomas
- Teylers Museum.
- Teyler's Stichting, Haarlem. Bibliotheek
- Teyler's Stichting, Haarlem. Museum. Bibliotheek
- Teysmann, Johannes Elias, 1808-1882
- Tezcan, Serdar
- Tezuka, Yoko
- TGS Technology, Inc.
- Th. F. Van der Meulen (Firm)
- Thaanum, D.
- Thabes, John.
- Thacer, George Blake, 1906-
- Thacer, Helena Duryea
- Thach, Nguyen Ngoc
- Thach, Phanara
- Thacher, James, 1754-1844
- Thacher, Jeanie I. W.
- Thacher, Mrs. Alfred B.
- Thacher, Thomas Anthony, 1815-1886
- Thacker Gardens.
- Thacker, Alan.
- Thacker, Christine E.
- Thacker, G. W.
- Thacker, Gale W.
- Thacker, T. L.
- Thackeray, Tejas
- Thackray, John C. (John Christopher), 1948-1999
- Thadathil, Pankajakshan
- Thaddeus Hale (Firm)
- Thadeo, Marcela
- Thaeler, Charles S
- Thaer, Albrecht Daniel, 1752-1828
- Thâevenot, Jean de, 1633-1667
- Thaggard, Hazra
- Thain, E. Malcolm, 1925-
- Thaithong, Obchant.
- Thakre, V. Y.
- Thakur, A. K.
- Thakur, M. L.
- Thakur, Nirmal K.
- Thakur, R. K.
- Thakur, Rakesh
- Thakur, S. K.
- Thakur, Sanjay
- Thakur, Sanjay S
- Thal, J.
- Thal, Johannes, 1542-1583
- Thalasso, Frédéric
- Thalbitzer, William, 1873-1958
- Thaler, Konrad, 1940-2005
- Thaler, Maximus
- Thaler-Knoflach, Barbara
- Thaler-Kottek, Ellen
- Thallwitz, J.
- Thalman, Joseph Luther, 1878-
- Thamathawan, Sompong
- Thambugala, Kasun M
- Thamdrup, Bo
- Thame, A.
- Thames, Sara
- Thamm, W.
- Thammachoti, Panupong
- Thamsenanupap, Penkhae
- Than, Károly, 1834-1908
- Thanakitpipattana, Donnaya
- Thananthaisong, Theerawat
- Thanaphum, Sujinda
- Thanarut, Chinnapan
- Thandar, A. S.
- Thane, George Dancer, 1850-1930
- Thangaraj, Sangappellai
- Thangavelu, K.