| Walter Stephen Judd | |
| Birth Place: | Fairbanks, Alaska |
| Nationality: | American |
| Spouse: | Beverly |
| Field: | Botany |
| Work Institution: | University of Florida |
| Alma Mater: | Michigan State University, Harvard University |
| Known For: | Plant taxonomy (Judd system) |
| Author Abbreviation Bot: | Judd |
Walter S. Judd (born 1951) is an American botanist and taxonomist, and distinguished professor in the Department of Botany, University of Florida since 2009.[1]
Judd attended Michigan State University (B.S. 1973, M.S. 1974) and Harvard University (Ph.D. 1978). He became an assistant professor in the Department of Botany at the University of Florida (1978–1983), associate professor (1983–1991) and professor in 1991. He was president of the American Society of Plant Taxonomists 2000–2001.[1]
Professor Judd has been a contributor to the Angiosperm Phylogeny Group and produced his own modification of this in 1999, the Judd system.