Lilias Torrance Newton (November 3, 1896 – January 10, 1980) was a Canadian painter.
Lilias Torrance Newton was born in Lachine, Quebec, a suburb of Montreal, in 1896. Her parents, Alice Mary Stewart and Forbes Torrance, were prominent Montreal figures; her father being a member of the Pen and Pencil Club of Montreal. It is estimated that an old sketchbook of her father's is thought to be an early artistic inspiration. She left school at 16 to attend classes given by William Brymner at the Art Association of Montreal, where she won a scholarship in the Life class in her first year. She later studied with Alfred Wolmark in London and Alexandre Jacovleff in Paris.
During the First World War, she worked for the Red Cross in England. During the year of 1922 she won the Honorable Mention at the Paris Salon while studying with Alfred Wolmark. Married in 1921, she had one child and was divorced in 1933. She was the only member of The Beaver Hall Group to marry.
Newton was elected an Associate of the Royal Canadian Academy in 1923, and became its third female member in 1937. She became an Academicin in 1939 and 1973.
She was also a founding member of the Beaver Hall Group and the Canadian Group of Painters. She taught at her alma mater, the Art Association of Montreal, and received an honorary LL.D. from the University of Toronto. Newton is best known for her portraits, over 300 in her career, including her 1957 portraits of Queen Elizabeth II and Prince Philip. Newton was the first known Canadian commissioned to make a portrait of either subject. Her portraits were known to be psychological in nature.