Dunn
The taxon authority Dunn may refer to:
- Alison M. Dunn (fl. 2004; A.M.Dunn), mycologist
- Casey William Dunn, U.S. evolutionary biologist
- Daphne Fautin Dunn (1946–2021), U.S. cnidariologist, also known as Daphne Gail Fautin
- David Baxter Dunn (1917-1994; D.B.Dunn), botanist
- Edward John Dunn (1844–1937; E.J.Dunn), geologist, botanist
- Emmett Reid Dunn (1894–1956), U.S. herpetologist active in the Americas
- Robert R. Dunn, U.S. biologist, professor in the Department of Biological Sciences at North Carolina State University. Often published as Rob R. Dunn
- Paul H. Dunn (P.H.Dunn), mycologist, phycologist
- Stephen Troyte Dunn (1868–1938, Dunn), English botanist who made significant contributions to the taxonomy of Chinese plants