| Gwen Harden | |
| Birth Date: | 1940 |
| Citizenship: | Australian |
| Nationality: | Australian |
| Field: | botany |
| Known For: | Botanist |
| Author Abbrev Bot: | G.J.Harden |
| Footnotes: | 4-volume Flora of New South Wales |
Gwenneth Jean Harden (born 1940) is an Australian botanist and author.
In 1990 the first of her four volumes of the Flora of New South Wales was published. The four-volume set was fully revised in 2000.
The nightcap oak (Eidothea hardeniana) is named in her honour.[1] [2]