St. Margaret's School in Victoria, British Columbia, Canada, is an international, non-denominational independent day and boarding school for girls only, with grades ranging from Junior Kindergarten (Early Childhood Education, ECE) to Grade 12.

It is located on 22 acres (89,000 m2) of land and is the oldest, continuous independent school on Vancouver Island.

Tragedy struck on April 10, 1911 when the Fenwick sisters were drowned in the capsizing of the SS Iroquois as it left Sidney en route to Salt Spring Island.

For years after, she would describe her ordeal and show students her scarred hands, burned when she struggled to avoid a boiler.

Many changes and developments took place over the years and by 1928, SMS had amalgamated with St. George's, a rival Victoria girls' school.