May Marshall Brown was a Scottish landscape and figure painter, etcher and teacher. She married Scottish artist William Marshall Brown.
Born in Edinburgh on 5th of March 1887, she studied at the Royal Institute in Edinburgh and the Edinburgh College of Art. She exhibited at the Royal Scottish Academy, the Royal Scottish Society of Painters in Watercolours, the Glasgow Institute of Fine Arts and the Scottish Society of Artists.
In 1936 she was elected to the Royal Scottish Society of Painters in Watercolours.