Margaret Marshall Houldsworth (14 September 1839[1] – 29 October 1909)[2] was a British campaigner for women's education and a philanthropist.
The family moved to Scotland, where her parents died in the later 1860s and Houldsworth went to live with her brother near Lasswade for some time before settling in Edinburgh.
She also played an active role in setting up the Masson Hall residence for female students at the University of Edinburgh.
From 1872 she belonged to the Edinburgh Ladies' Debating Society led by Sarah Mair and, alongside Mair, was a central figure in starting classes and correspondence courses for women, and then in establishing St George's Training College and St George's School for Girls.
As well as contributing to educational projects, Houldsworth supported the Edinburgh National Society for Women's Suffrage, and Sophia Jex-Blake's Hospital and Dispensary for Women and Children, a forerunner of Bruntsfield Hospital.