| Alan Stuart Weakley | |
| Birth Date: | 19 February 1957[1] |
| Birth Place: | Montgomery County, Maryland |
| Nationality: | American |
| Workplaces: | North Carolina Department of Natural Resources, The Nature Conservancy, NatureServe, University of North Carolina at Chapel Hill, University of North Carolina Herbarium |
| Alma Mater: | University of North Carolina at Chapel Hill (B.A.), Duke University (Ph.D.) |
| Thesis Title: | Change over time in our understanding of the flora of the southeastern United States: implications for plant systematic, bioinformatics, and conservation |
| Thesis Year: | 2005 |
| Author Abbrev Bot: | Weakley |
Alan Stuart Weakley (born 1957) is an American botanist with expertise in the systematics, ecology, and conservation of the flora of the Southeastern United States.[2] Weakley is the director of the UNC Herbarium at the North Carolina Botanical Garden and an adjunct associate professor at the University of North Carolina at Chapel Hill. He is the author of Flora of the Southern & Mid-Atlantic States, a manual covering the approximately 7000 vascular plants found in the Southeastern United States.[3]
, the International Plant Names Index lists 56 names published by Weakley.[4]