- Washington jockey club.
- Washington Native Plant Society.
- Washington Natural Heritage Program.
- Washington Nurseries (Toppenish, Wash.)
- Washington Nursery Co.
- Washington Nursery Company.
- Washington orange grove association.
- Washington School Boys' Association
- Washington Seed Co.
- Washington society of the fine arts, Washington, D.C.
- Washington State Apple Commission.
- Washington State Gap Analysis Project.
- Washington State Parks And Recreation Commission.
- Washington State Snowmobile Association.
- Washington State University.
- Washington Street Nurseries (Geneva, N.Y.)
- Washington Valley Dahlia Gardens.
- Washington, Betsy B.
- Washington, D.C. Chamber of commerce. Special committee on milk situation in District of Columbia.
- Washington, George, 1732-1799
- Washington, Haydn
- Washington, Haydn G
- Washington, Henry S. (Henry Stephens), 1867-1934
- Washington, Henry Stephens, 1867-1934
- Washington, Margaret.
- Washitani, Izumi
- Wasielesky, Wilson, Jr.
- Wasielewski, Theodor Karl Wilhelm Nicholas von, 1868-
- Wasilewski, Piotr
- Wasley, J.
- Wasmann, Erich, 1859-1931
- Wasmer, Robert A.
- Wason, Anil
- Wasonga, D. V. (Domnick Victor)
- Wasonga, Victor
- Wasowicz, Anthony
- Wasowicz, Pawel
- Wass, Ed F.
- Wass, Marvin L. (Marvin Leroy), 1922-
- Wass, Robin
- Wass, Robin E.
- Wassam, C. E.,
- Wassan, R J
- Wasscher, Marcel
- Wassell, James T.
- Wassenberg, Chas. F.
- Wassens, Skye
- Wasser, Leah
- Wasser, S P
- Wasser, Solomon P
- Wasserburg, Richard J
- Wasserloos, E.
- Wasserman, Danielle
- Wasserman, David
- Wasserman, Harold
- Wasserman, Ryan
- Wassermann, August, 1866-1925
- Wassermann, G. F.
- Wassersug, Richard J.
- Wasserthal, L. T.
- Wasserzug, Étienne Bronislaw
- Wasserzug, M E
- Wasshausen, Dieter C.
- Wassmann. August
- Wassner, Diego Fernán
- Wasson, John R.
- Wasson, Kerstin
- Wasson, R Gordon
- Wasson, R J
- Wasson, Theron, 1887-1970
- Wasson, Theron, 1887-
- Wassum, Chas. S.,
- Wasteneys, Hardolph
- Wasti, S. Salman
- Wastian, Laura
- Wastler, T. A.
- Wasum, Ronaldo
- Wasyliw, Joshua
- Watabe, Hide-Aki
- Watabe, Mahito
- Watabe, Mai
- Watabe, Norimitsu
- Watada, Alley E.
- Watanabe, A. L.
- Watanabe, Akinobu,
- Watanabe, Daisuke
- Watanabe, Gentai, 1749-1822
- Watanabe, Hideki
- Watanabe, Hiroko Makino
- Watanabe, Hiromi
- Watanabe, Hiroshi
- Watanabe, I.
- Watanabe, Ii-Sei
- Watanabe, James M.
- Watanabe, K.
- Watanabe, Kayo
- Watanabe, Kazuo
- Watanabe, Kiyohiko. 渡辺淸彥, 1900-
- Watanabe, Kohei
- Watanabe, Kozo
- Watanabe, Kuniaki
- Watanabe, Kyohei
- Watanabe, Mamoru
- Watanabe, Marcos D.B.
- Watanabe, Maurício
- Watanabe, Michihito
- Watanabe, Mikiko
- Watanabe, Mikio
- Watanabe, Munetaka
- Watanabe, Nangaku, 1767-1813
- Watanabe, Nasao
- Watanabe, Seitei, 1851-1918
- Watanabe, T.
- Watanabe, Takako
- Watanabe, Takako
- Watanabe, Takushi X.
- Watanabe, Timoteo T.
- Watanabe, Tomohiro
- Watanabe, Tsuyoshi
- Watanabe, Yoichi
- Watanabe, Yoshio
- Watanabe, Yuichi G.
- Watari, Yuya
- Watasé, Shozaburo.
- Watchman, A L
- Watchman, Alan
- Watchman, G.
- Watchung Dahlia Gardens.
- Watekston, James
- Watelet, Adolphe, 1811-1879
- Watelet, Adolphe, 1839-1899
- Watelet, Claude-Henri, 1718-1786
- Watelet, Eugénie,
- Watenpaugh, H. D.
- Water Resources Council (U.S.)
- Water, James.
- Watereouse, C O
- Waterer, Hosea (Firm : Philadelphia)
- Waterer, Hosea.
- Waterfall, U. T. (Umaldy Theodore),
- Waterfield, Margaret Helen 1863-1953
- Waterhouse, A. N.
- Waterhouse, Barbara
- Waterhouse, Benjamin, 1754-1846
- Waterhouse, Charles Owen, 1843-1917
- Waterhouse, D. F.
- Waterhouse, David R
- Waterhouse, Frederick H
- Waterhouse, Frederick Herschel, 1845-1919
- Waterhouse, G. A.
- Waterhouse, G. R. (George Robert), 1810-1888
- Waterhouse, Gustavus A., 1877-1950
- Waterhouse, H
- Waterhouse, J. B.
- Waterhouse, J. B. (John Bruce), 1932-
- Waterhouse, J. H. (Janet H.)
- Waterhouse, J. Stallard
- Waterhouse, James
- Waterhouse, John T
- Waterhouse, L L
- Waterhouse, Maurice
- Waterhouse, Robert
- Waterhouse, W. K.
- Waterhouse, Walter Lawry
- Waterloo Bulb Farms.
- Waterloo, Maarten J.
- Waterlot, G
- Waterlow and Sons,
- Waterman, Allyn J. (Allyn Jay), 1902-
- Waterman, Alma M. (Alma May), 1893-
- Waterman, Catharine H. (Catharine Harbeson), 1812-
- Waterman, George Arthur,
- Waterman, Harriet Cutler, 1895-
- Waterman, Jane Margaret, 1958-
- Waterman, Kalisi
- Waterman, Larry Wayne.
- Waterman, T. T. (Thomas Talbot), 1885-1936
- Waterman, Talbot H. (Talbot Howe), 1914-2010
- Waterman, Warren Gookin, 1872-1952
- Watermann, Lena Yasmin
- Watermolen, Dreux J.
- Waters, Arthur W
- Waters, Arthur William, 1846-1929
- Waters, Bernard.
- Waters, Campbell Easter, 1872-1955
- Waters, Cathy
- Waters, Dana L.
- Waters, Dennis P.
- Waters, Edward S.,
- Waters, Elizabeth R
- Waters, G. Thomas
- Waters, Gifford J.
- Waters, Gregory J.
- Waters, Henry Jackson, 1865-1925
- Waters, Ian
- Waters, Isobel
- Waters, J. R.
- Waters, James A.
- Waters, James.
- Waters, Jane S.
- Waters, Jonathan M. (Jonathan Michael)
- Waters, Julie
- Waters, Nigel
- Waters, S. B.
- Waters, Sean
- Waters, Shirley H.
- Waters, Silas B. Mrs.
- Waters, Thomas Franklin, 1851-1919
- Waters, Virginia L.
- Waters, W. G. (William George), 1844-1928
- Waters, W. George.
- Waters, William E., 1922-
- Waterschoot van der Gracht, W. A. J. M. van (Willem Anton Joseph Maria), 1873-1943
- Watershed Research Workshop Chesapeake Bay Center for Environmental Studies) 1977-
- Watershed Science Institute (U.S.)
- Waterson, Berlin & Snyder Co.
- Waterson, John, 1656
- Waterstock
- Waterston, A. R.
- Waterston, A. Rodger
- Waterston, C. D.
- Waterston, James
- Waterston, R.
- Waterstradt, John
- Waterton, Charles, 1782-1865
- Waterway, Marcia J
- Waterways Experiment Station (U.S.)
- Waterways Experiment Station (U.S.)
- Waterways Experiment Station (U.S.).
- Waterworth, Rebeccah
- Waterworth, Samantha
- Waterworth, Y.
- Watetu, Wilson Nderitu
- Watford Natural History Society and Hertfordshire Field Club.
- Watharow, Simon
- Wathen, George Henry
- Wathen, M. L.
- Wathen, William Henry
- Wati, Richa
- Watiroyram, Santi
- Watkin, E L J
- Watkin, Harold.
- Watkins & Locke (Firm)
- Watkins & Simpson, Ltd.
- Watkins Nurseries.
- Watkins, A. F.
- Watkins, B. J.,
- Watkins, Barry
- Watkins, C. W.
- Watkins, Carleton E., 1829-1916