Grace Ross Cadell (October 25, 1855 – February 19, 1918) was a Scottish medical doctor and suffragist, and one of the first group of women to study medicine in Scotland and qualify.
She was, with Elsie Inglis, one of the initial entrants to the Edinburgh School of Medicine for Women, set up by Sophia Jex-Blake in 1886. She stood up to Jex-Blake over a disciplinary matter, being dismissed from the school and subsequently successfully sued Jex-Blake and her school. Her career as a physician and surgeon was devoted mainly to the care of women and children.
She became an active suffragette as was well known for public acts of defiance in the cause of women's suffrage. She was prominent in providing medical care and refuge for her fellow suffragettes, some of whom were released into her care directly from episodes of force feeding in prison. Her home became well known as a sanctuary for suffragettes.