Díaz
The taxon authority Díaz or Diaz may refer to:
- Alex Gustavo Díaz Hernández (A.G.Diaz), botanist
- Alondra M. Díaz-Lameiro, herpetologist
- Ana Elizabeth Diaz, Colombian entomologist
- Analía Roxana Díaz, Argentine ostracodologist
- Carlos Díaz-Ungría (1917–1992), Spanish entomologist and parasitologist
- Claudia J. Ramírez-Díaz (fl. 2020, Ram.-Díaz), botanist
- Darío J. Díaz Cosín, Spanish annelidologist
- Elsa Nélida Lacoste de Díaz (born 1923; E.N.Lacoste), phycologist
- Fiorella Díaz, Peruvian entomologist
- Florentina Díaz (F.Diaz), Argentine entomologist
- Francisco A. Díaz, Venezuelan entomologist
- Hugo A. Díaz, Chilean herpetologist
- Jessica Diaz, entomologist
- John Alexander Pulgarín Díaz, Colombian entomologist
- Juan Angel Díaz-Pazos, entomologist
- Juan Manuel Díaz Gómez, Argentine herpetologist
- Juliette Cristina Gualdrón-Diaz, entomologist
- Karen Díaz, Mexican carcinologist
- Luis Manuel Díaz Beltrán (born 1972), Cuban herpetologist
- Maria Cristina Díaz, Venezuelan spongiologist
- María Fernanda Díaz, Colombian entomologist
- M. Isabel Diaz, Peruvian herpetologist
- María Mónica Díaz, Argentine mammalogist
- Marta Aleida Díaz Dumas (born 1950; M.A.Díaz), Cuban botanist
- Melissa Díaz-Morales (fl. 2016; M.Díaz), botanist
- Nelson Félix Díaz, Chilean herpetologist
- Óscar Felipe Díaz-Díaz, Venezuelan annelidologist
- Paula Andrea Díaz, Colombian entomologist
- Peter H. Diaz, malacologist
- Pilar Díaz-Tapia (Díaz-Tapia), phycologist
- Raúl Epiblast Díaz Jr., U.S. zoologist
- René Barba Díaz, Cuban arachnologist
- Tomás Emilio Díaz (born 1949; T.E.Díaz), Spanish botanist, ecologist, and pteridologist