Muriel Robertson FRS,[1] FRSTM, F.I.Biol (8 April 1883 – 14 June 1973)[1][2] was a Scottish protozoologist and bacteriologist at the Lister Institute, London[1] from 1915 to 1961.

After her father's sudden death, when she was 16, her initial thoughts were to study medicine; but her mother insisted on her taking a degree in Arts first.

With this, she was able moved to Ceylon (now Sri Lanka) to study trypanosome infections in reptiles, being provided with space to work by Arthur Willey, curator of the museum at Colombo She then joined the staff at the Lister Institute in London under Professor Edward Alfred Minchin from 1910 to 1911.

She worked in the Royal Society laboratory at Mpumu, close to Lake Victoria Nyanza: the epicentre of the disease.

A review of this research in her obituary,[11] in the journal Nature, states: ''Her work on this subject has never been superseded nor indeed equalled, and the accuracy of some of her conclusions ... is only now being fully appreciated.".

[3] She continued work in Cambridge for a short period before finally retiring to the family estate in Limavady in Northern Ireland.