- Seton-Karr, Henry, Sir.
- Seton-Thompson, Grace Gallatin.
- Setrakian, Arpaxat, 1885-1974
- Setrakian, Robert, 1924-
- Setsuda, Ken-Ichi
- Setta, Bruno R.S.
- Setta, Nathalia de
- Sette, Oscar Elton
- Settegast, H.
- Settele, J
- Settele, Josef
- Setten, D. J. G. van.
- Setterblad, Anders Erik, 1800-1858
- Setterfield, Samantha
- Settergren, A. Ch.,
- Settle, Jeff.
- Settle, W J
- Settle, Wilbur J
- Settlemier, F. W.
- Settlemier, J. H.
- Settles, Mindy
- Settles, William H.
- Setty, L R
- Setúbal dos Santos, Simone
- Setubal, Robberson Bernal
- Setyodiwiryo, Kusnoto
- Setz, Eleonore Zulnara Freire
- Setzer, H W
- Setzer, Henry W
- Setzer, Robert B
- Setzer, Theodore S.
- Setzer, Theodore S.,
- Setzler, Frank M
- Seuánez, H N
- Seubert, John L.
- Seubert, Moritz, 1818-1878
- Seubert, Rafaela Cristina
- Seuerian, Arshag Killijian.
- Seufert, Peter
- Seuffert, Maria E
- Seulberger, J.
- Seung Se, Choi
- Seung, Jinbae
- Seuntjens, Robert
- Seur, Julie
- Seurat, L.-G. (Léon-Gaston) 1872-1949
- Seurrat de La Boullaye, Jacques-Isaac, 1728-1803
- Seussenguth, Karl
- Seuter, Bartholomäus, 1678-1754
- Seutin, Gilles
- Sevag, Manasseh Giragos, 1897-
- Sevastianov, Nikita
- Sevastopulo, D G
- Sevastopulo, G D
- Sevastopulo, George D
- Sevastopulo, P G
- Sève, Jacques De, active 1742-1788
- Sève, Jacques Eustache de
- Sevegnani, Lucia
- Sevegnani, Lúcia
- Seven Acres (Firm)
- Seven Firs Gladiolus Garden.
- Seven Oaks Nurseries.
- Seven, Pinar Tatli
- Seven, Selma
- Sévenet, T
- Sévenet, Thierry
- Seventer, H A Van
- Seven-up Pete Joint Venture.
- Sever, F. P. (Franklin Pierce)
- Severance, Hayward Merriam.
- Severance, J. Seymour
- Severenty, Vinvent
- Severeyns, G. fl 1850-1890
- Severeyns, G.,
- Severi, William
- Severiano, JS
- Severiano, Juliana Santos
- Severin, Guillaume.
- Severin, H C
- Severin, H C M
- Severin, H H P
- Severin, H P
- Severin, Harry C
- Severin, Henry H P
- Severin, Kenneth P.
- Severinghaus, L L
- Severinghaus, Lucia Liu
- Severinghaus, S R
- Severinghaus, W. D. (William D.)
- Severini, Johann, 1716-1789
- Severino, Marco Aurelio, 1580-1656
- Severino-Rodrigues, Evandro
- Severinus, Isaac (Leiden)
- Severn, Dr.
- Severn, H A
- Severns, P M
- Severns, Paul
- Severns, Paul M
- Severnyĭ (Arkticheskiĭ) Federalʹnyĭ Universitet Imeni M.V. Lomonosova,
- Severo, Eduardo
- Severo-Neto, Francisco
- Severo-Neto, Francisco
- Severson, D J
- Severson, Kieth E.
- Severtsov, N. A. (Nikolai Alekseevich), 1827-1885
- Severtzoff, N
- Severy, J W
- Severyns, G.
- Sevey, Glenn Cyrus, 1879-
- Sevier, John, 1745-1815
- Sevilha, Anderson C.
- Sevilha, Anderson Cássio
- Sevilla, Sofía Rodríguez
- Sevillano, Orlando Pretel
- Sevillano, Rios
- Seville, Robert S
- Sevin, Pierre Paul, 1650-1710
- Sevin, Vincent & Co.
- Sevin, Vincent & Company.
- Sevin-Vincent Co.
- Sevrens, Ella A.
- Sevrens, George N.
- Sevrin-Reyssac, Josette
- Sévy, L. de.
- Sew, Sumit K
- Sewall, Charles Summers, 1875-1957
- Sewall, James Wingate, 1884-
- Sewall, Joseph Addison, 1830-1917
- Seward Nursery Seed and Floral Co.
- Seward Nursery, Seed and Floral Company.
- Seward Ranger District (Alaska)
- Seward, A C
- Seward, A. C. (Albert Charles), 1863-1941
- Seward, A. C. Sir, (Albert Charles), 1863-1941
- Seward, Albert Charles, (Sir) 1863-1941
- Seward, Anna, 1742-1809
- Seward, Mary L.
- Seward, R M
- Seward, William H. (William Henry), 1801-1872
- Sewel, William, 1653-1720
- Sewell, A T
- Sewell, Alfred Joseph.
- Sewell, Anna, 1820-1878
- Sewell, Brenda
- Sewell, Cornelius V. V.
- Sewell, Edward.
- Sewell, Eugene P.,
- Sewell, Franklane L.
- Sewell, John (Londen)
- Sewell, John Stephen, 1869-
- Sewell, K B
- Sewell, Kim B
- Sewell, M A
- Sewell, R. B. Seymour (Robert Beresford Seymour)
- Sewell, Sven
- Sewsaran, Renita
- Sexauer Company,
- Sexsmith, John Albert, 1866-1943
- Sexsmith, John J.
- Sexton Gardens.
- Sexton Plant Co.
- Sexton, Donald A.
- Sexton, E W
- Sexton, E. C.
- Sexton, Harold Patrick.
- Sexton, J D
- Sexton, J. M.
- Sexton, Jason P
- Sey, O
- Sey, Otto
- Seybold, S
- Seybold, Steven J
- Seyboth, Elisa
- Seychelles Bird Records Committee
- Seychelles. Department of Agriculture
- Seychelles. Governor
- Seydel, Emil.
- Seyedbagheri, Kathleen A.
- Seyed-Emam, Kazem
- Seyed-Emami, Kazem
- Seyfarth, Ernst-August
- Seyfarth, Paisley A.
- Seyfert, Steven
- Seyffarth, João A.S.
- Seyffert, C. G., active approximately 1756-1764
- Seyfort, M J
- Seyfried, Mark.
- Seylan, Marthe Hayri-Aziz.
- Seyle, H
- Seyler, Frédérique
- Seyler, H.G.
- Seyler, Kenneth.
- Seyler, Patrick
- Seymour E. Brooks (Firm)
- Seymour, Arthur Bliss, 1859-1933
- Seymour, Charles W. S. 1839-1895
- Seymour, Charles Winfield Scott, 1839-1895
- Seymour, Donald L.
- Seymour, E. L. D. (Edward Loomis Davenport), 1888-
- Seymour, E., Rev.
- Seymour, Edward Loomis Davenport, 1888-
- Seymour, F C
- Seymour, Frank C
- Seymour, Frank Conkling,
- Seymour, Frank Conkling.
- Seymour, Frederick H. A.
- Seymour, Gayle A.
- Seymour, Harry Augustus.
- Seymour, J
- Seymour, Jamie E
- Seymour, Kevin L.
- Seymour, Minor L.
- Seymour, N R
- Seymour, Norman R.
- Seymour, P R
- Seymour, Pamela D.
- Seymour, Paul Henry, 1869-
- Seymour, Scott
- Seymour, W R
- Seymour, William R.
- Seymoure, Brett M
- Seynes, Jules de, 1833-1912
- Seyoum, S.
- Seyrig, André
- Seys, J
- Seyster, E W
- Seyster, Ernest Wilford.
- Seyyar, Osman
- Sfendourakis, Spyros
- Sfenthourakis, S
- Sfenthourakis, Spyros
- Sferco, Guillermo D.
- Sferra, N J
- Sforzi, Alessandra
- Sforzi, Andrea
- Sfragulla, Jorge A.
- Sfriso, Adriano
- Sfriso, Andrea
- Sfriso, Andrea Augusto
- Sganga, Daniela
- Sganga, Julieta
- Sganga, Julieta V.
- Sganzin, M.
- Sgardelis, Steanos
- Sgardelis, Stefanos
- Sgrosso, Silvia
- Sguazza, GH.
- Sguros, P L
- Sh., Hossein Rajaei