Marion Isabel Newbigin (1869 – 20 July 1934) was a Scottish geographer, biologist and academic author.
While a student in Edinburgh she started to work as an assistant for zoologist J. Arthur Thomson, then a lecturer at the School of Medicine for Women, who was a great influence on her.
[1][2] While a student in London, Newbigin began conducting research, based at the laboratories of the Royal College of Physicians.
[1] After completing her degrees in London, Newbigin returned to Edinburgh, where she took up her mentor Thomson's position as lecturer of biology and zoology at the School of Medicine for Women.
She contributed numerous academic works, and unusually even for her time, her geographical interests were wide-ranging, covering essentially every subfield of geography.
[1][3] At Chamberlain Road, Edinburgh she lived for many years with her sisters Hilda and Alice, as well as Maude once the latter retired.