| Birth Name: | Leslie Rensselaer Holdridge |
| Birth Date: | September 29, 1907 |
| Birth Place: | Ledyard, Connecticut |
| Death Place: | Easton, Maryland |
| Citizenship: | USA |
| Nationality: | American |
| Work Institutions: | Costa Rica Institute of Technology |
| Alma Mater: | H. B.S. in Forestry, University of Maine, 1931, postgrad., 1931-32 M.S. in Ecology, University of Michigan, 1946, Ph.D., 1947. |
Leslie Ransselaer Holdridge (September 29, 1907 – June 19, 1999) was an American botanist and climatologist.
See main article: Holdridge life zones. In his famous 1947 paper,[1] he defined "life zones" using three indicators:
Holdridge participated in the Cinchona Missions, a United States effort to search for natural sources of quinine during World War II.[2]
He was the father of composer Lee Holdridge as well as the father of Leslie A. Holdridge, Lorena Holdridge, Marbella Holdridge, Marly Holdridge, Marisela Holdridge, Thania Holdridge, John Holdridge, Ida Holdridge, Reuseland Holdridge, Leythy J. Holdridge and youngest son Gregory Holdridge whom he fathered with Costa Rican Clara Luz Melendez.