Margaret Ann Bradshaw (née Cresswell; born 31 December 1941) is a New Zealand geologist and a retired staff member at the University of Canterbury.

[5] Bradshaw began her work there on Devonian invertebrate palaeontology, gradually incorporating Antarctica into her research.

[3] Bradshaw focused her research on the structure and stratigraphy of Devonian rocks, around 400 million years old, in New Zealand and Antarctica.

Bradshaw was a curator at the Canterbury Museum and her initial trips to Antarctica were to collect fossils and rocks for the Antarctic display.

[7] Bradshaw Peak, situated on the south west side of the McLay Glacier in Antarctica, is named in her honour.