| Mayda Doris de Winter | |
| Birth Name: | Mayda Doris Henderson |
| Birth Date: | 3 February 1928 |
| Death Place: | Cape Town |
| Fields: | Botany |
| Education: | Rhodes University |
| Thesis1 Title: | and |
| Thesis2 Title: | )--> |
| Thesis1 Url: | and |
| Thesis2 Url: | )--> |
| Thesis1 Year: | and |
| Thesis2 Year: | )--> |
| Doctoral Advisors: | )--> |
| Spouse: | Bernard de Winter |
| Partners: | )--> |
Mayda Doris Henderson (3 February 1928 – 3 September 2015, in Cape Town) was a South African botanist, phytogeographer, and taxonomist. She studied at Rhodes University and was best known for her articles published in Kirkia; The Zimbabwe Journal of Botany. She was the recipient of a Southern Africa Medal.
She was active as a taxonomist from 1954 to 1963.