Mary Elizabeth MacCallum Scott (c. 1865 – 27 August 1941) was a Canadian physician and Christian medical missionary who spent twenty years in Ceylon (now Sri Lanka).

Mary Elizabeth MacCallum married Thomas Beckett Scott, who was educated in the Arts, Theology, and Medicine at Queens University in Kingston, Ontario.

[3] They spent many years in the northern province of Jaffna (1893-1913)  as part of the American Ceylon Mission (ACM).

Samuel Fisk Green had earlier founded Sri Lanka's first medical hospital and school, but he had left in 1873.

[10]  Scott made sure that a new Maternity Ward was opened at Inuvil in 1911 and both she and Curr trained many nurses in Jaffna.

The Woman's Medical Mission in Jaffna, Ceylon, even sent out an ad regarding an opening for a female physician associate who would work with Curr.

[7] By 1904, Scott was not only assisting in the medical work, training nurses but she was also in charge of the Biblewoman of the Station.

[12] Thomas Scott was the Secretary of the Mission, and had charge of the Green Memorial Hospital, the dispensary and of the Manipay station.

[13] On their return from Ceylon to the United States in 1913, both Scotts were placed in charge of the Walker Missionary Home in Auburndale, Massachusetts; they eventually retired in 1925.

[4] Scott retired as a medical missionary and died a widow at the age of 76 on August 27, 1941, in Tuckahoe, Westchester County, New York.