- Castillo-Acosta, Ofelia
- Castillo-Argüero, Silvia
- Castillo-Blasco, Carla A
- Castillo-Blum, Silvia E.
- Castillo-Cadena, Julieta
- Castillo-Campos, Gonzalo
- Castillo-Del Moral, Ranulfo
- Castillo-Durán, Ariaana
- Castillo-Guerrero, José Alfredo
- Castillo-Guevara, Citlalli
- Castillo-Gutiérrez, Antonio
- Castillo-Gutiérrez, Sonia Guadalupe
- Castillo-Jordán, Claudio
- Castillo-Juárez, Héctor
- Castillo-Lara, Pedro
- Castillo-Martínez, Antonio
- Castillo-Monroy, Andrea P.
- Castillo-Morales, Alberto
- Castillon, Jean-Bernard
- Castillón, Léon
- Castillo-Rivera, Manuel
- Castillo-Ruperti, Ricardo
- Castillo-Soriano, Francisco A
- Castillo-Urbina, Ernesto
- Castillo-Velázquez, Rosalina
- Castillo-Vera, Alfredo
- Castle & Arkema.
- Castle Gardens (Spring Lake, Mich.)
- Castle, Mr.,
- Castle, Agnes, 1860-1922
- Castle, D. M.
- Castle, David, 1967-
- Castle, Edward S
- Castle, Egerton, 1858-1920
- Castle, John F.
- Castle, P. H. J. (Peter Henry John)
- Castle, R. Lewis
- Castle, Ruth Marion
- Castle, Thomas, 1804?-1840?
- Castle, William E. (William Ernest), 1867-1962
- Castle, William S., 1943-
- Castleberry, Steven B
- Castlebury, Lisa A
- Castlemaine Field Naturalists Club
- Castleman, Kenneth R.
- Castles Of Florida,
- Castles, Ian
- Castlewood Dahlia Farm.
- Casto, Patrick
- Casto, Stanley D.
- Castor, Carmen
- Castracane degli Antelminelli, Francesco, 1817-1899
- Cāstrāi, Pandit Hara Prasād
- Castrale, J S
- Castrejón, Javier
- Castresana, Jorge
- Cāstri, Hara Prasāda
- Castric-Fey, Annie, 1942-
- Castrillón, Aurélia Lopes
- Castrillon, Maria Ignêz
- Castrillon, Solange Kimie Ikeda
- Castro Araújo, Kássio
- Castro Blanco, Alcides
- Castro Castro, Arturo, 1979-
- Castro Cerceda, L
- Castro e Silva, Ademir.
- Castro e Silva, Francisco.
- Castro Filho, Belmiro Mendes de
- Castro González, Maribeb
- Castro Guzmán, Sonia
- Castro Herrera, Fernando
- Castro Huertas, Valentina
- Castro Júnior, Francisco Pires de
- Castro Lara, José Manuel
- Castro Larragoitia, Javier
- Castro Mejía, Jorge
- Castro Neto, Vitorino Paiva.
- Castro Ortiz, A
- Castro- Rivera, Rigoberto
- Castro Romero, Jair H
- Castro Romero, Raúl
- Castro Romero, Telma
- Castro Sanguino, Carolina
- Castro Silupú, Jorge Elías
- Castro Torreblanca, Marisol
- Castro Torres, Daniel
- Castro Valderrama, Ulises
- Castro Vargas, María Isabel
- Castro Vázquez, Alfredo
- Castro, Adela V.
- Castro, Agustín
- Castro, Albejamere Pereira de
- Castro, Alberto de
- Castro, Alberto William Viana de
- Castro, Alceu Lemos de
- Castro, Alfredo Frías
- Castro, Ana Maria (Entomologist)
- Castro, Ana Maria (Malacologist)
- Castro, André Luís Moraes de
- Castro, André Luiz da Costa
- Castro, Antônio Alberto Jorge Farias
- Castro, Antonio C. L. de
- Castro, Antonio Velazquez De
- Castro, Araceli
- Castro, Arianna Bianca Campos
- Castro, Barbara
- Castro, Bárbara Monteiro de Castro e
- Castro, Bruna T
- Castro, Camila F.
- Castro, Carini Picardi Morais de
- Castro, Carla Corrêa de
- Castro, Carla Soraia Soares de
- Castro, Carlos Augusto Barbosa e
- Castro, Carolina Pottër de
- Castro, Cibele Cardoso
- Castro, Cíntia Oliveira de
- Castro, Clovis B.
- Castro, Clóvis Sormus de
- Castro, Daniel
- Castro, Daniel Barros de
- Castro, Darío
- Castro, Diego Marcel Parreira de
- Castro, Dolores del Carmen
- Castro, Dominique Jacob Fernandes de Assis
- Castro, Edison Vieira de
- Castro, Evaristo Mauro de
- Castro, Everaldo Rodrigo de
- Castro, F. J. G.
- Castro, Fabiana Marize C.
- Castro, Fabio J.
- Castro, Franciele R. de
- Castro, Francisco J. V. de
- Castro, Gabriel
- Castro, Germán
- Castro, Gilson Alexandre de
- Castro, Gislene C.
- Castro, H. B.
- Castro, Hermelindo
- Castro, Indira Maria
- Castro, Isabel
- Castro, Isai Jorge de
- Castro, Ivan
- Castro, Izabela Miranda de
- Castro, J. (Jorge)
- Castro, Janete Seixas de
- Castro, Javier
- Castro, Jocelyn A
- Castro, Jonas Blanco
- Castro, Jonathan P.
- Castro, José Gerley D.
- Castro, Jose Yabín Salmerón
- Castro, Juliana Polachini de
- Castro, Julio J. de
- Castro, Karen
- Castro, L. A. S. de
- Castro, Leonardo R.
- Castro, Ley Daiana Marins de
- Castro, Luana Valéria da Silva
- Castro, Luis Eduardo
- Castro, Luiz Arnaud Britto de
- Castro, Lyda
- Castro, M L
- Castro, M. P.
- Castro, Mabel de
- Castro, Manuel
- Castro, Manuel P.
- Castro, Marcelo Cutrim Moreira de
- Castro, Márcia Gonçalves
- Castro, Márcia Salustiano de
- Castro, María Agueda
- Castro, Mariana Monteiro de
- Castro, Marília de Moraes
- Castro, Marina Siqueira de
- Castro, Mauricio
- Castro, Mauro
- Castro, Maviael Fonseca de
- Castro, Mercedes E.
- Castro, Miriam A. de
- Castro, Mirley
- Castro, Mónica G
- Castro, Myra
- Castro, Nathália Góes Duarte de
- Castro, Neuza Maria
- Castro, Newton Gonçalves
- Castro, Nívea Maria Carneiro Farias
- Castro, Oscar
- Castro, Pablo A.
- Castro, Paulo de Tarso Amorim
- Castro, Paulo R. M.
- Castro, Peter
- Castro, Raquel Ribeiro de Souza
- Castro, Ricardo M. C.
- Castro, Ricardo Montianele de
- Castro, Roberta
- Castro, Rodrigo
- Castro, Rodrigo Hebeller
- Castro, Rodrigo R. L.
- Castro, Rodrigo Tokuta
- Castro, Rosauro E
- Castro, S. C.
- Castro, Sandra L
- Castro, Sergio Antonio
- Castro, Silvana A. B.
- Castro, Sílvia Raquel Cardoso
- Castro, Teresa
- Castro, Thais da Silva
- Castro, Thalía
- Castro, V. G. (Victor G.)
- Castro, Valdir
- Castro, Victoria
- Castro, Wendeson
- Castro-Acedo, Alberto
- Castro-Aguirre, José Luis
- Castro-Arévalo, Mauricio
- Castro-Campillo, Alondra
- Castro-Díez, Pilar
- Castro-Franco, Rubén
- Castro-González, María I.
- Castro-Guedes, Camila Fediuk de
- Castro-Hernández, José Juan
- Castro-Longoria, Reina
- Castro-Luna, Alejandro A.
- Castro-Mello, Carolina
- Castro-Nava, Sergio
- Castro-Ochoa, Fátima
- Castro-Ortiz, José Luis
- Castro-Ortíz, Lourdes Patricia
- Castro-Pérez, José Manuel
- Castro-Prado, M. A. A.
- Castro-Ramírez, Adriana Elena
- Castro-Rojas, Mauricio
- Castro-Santiuste, Sandra
- Castro-Santos, Theodore
- Castro-Silva, Marcus A.
- Castro-Souza, Thais
- Castro-Vazquez, Alfredo
- Castroviejo, Javier
- Castroviejo, Santiago
- Castroviejo-Fisher, Santiago, 1979-
- Castrovillo, Paul J.
- Casu, Marco
- Casula, Paolo
- Caswell, Alexis
- Caswell, Graham
- Caswell, John.
- Caswell, Melina J
- Caswell, Phil
- Cat Cove Marine Laboratory. Environmental Analysis Section.
- Cat Fanciers' Federation.
- Catacora, Georgina V.