| Joanna M. Kain | |
| Birth Name: | Dorothy Kain |
| Birth Date: | 1930 |
| Birth Place: | Christchurch, New Zealand |
| Death Date: | 21 July 2017 |
| Death Place: | Canberra, ACT, Australia |
| Nationality: | New Zealander and British |
| Fields: | Phycology |
| Workplaces: | Port Erin Marine Biological Station |
| Alma Mater: | University College London |
| Doctoral Advisor: | Gordon Elliott Fogg |
| Known For: | Research into ecology of macroalgae |
| Author Abbrev Bot: | J.M.Kain |
| Partner: | Norman Jones |
| Children: | 2 |
Joanna M. Jones (née Dorothy Kain, 1930 – 21 July 2017) was a phycologist, marine biologist and diver. She researched kelp forest ecology adding to the scientific knowledge on its population, reproduction, competition and growth as well as descriptions of subcanopy seaweeds found in kelp forests. She was president of the British Phycological Society from 1987 to 1988.[1]
Kain was born in Christchurch in 1930.
Kain worked at the Port Erin Marine Laboratory (PEML) until 1991.[2]
Jones died on 21 July 2017.