Dorothy Mary Cayley | |
|---|---|
 | |
| Born | 1874 |
| Died | 1955 |
| Nationality | British |
| Occupation | Mycologist |
| Employer | John Innes Horticultural Institution |
| Known for | discovered Tulip breaking virus |
Dorothy Mary Cayley (1874–1955) was a mycologist who discovered in 1927 that "Tulip breaking" is due to a virus.