Margaret Eleanor Theodora Addison CBE (October 21, 1868 - December 18, 1940) was a Canadian educator and the sixth woman to graduate from Victoria College.

[2] Addison graduated from Victoria in 1889 with a BA in modern languages.

[4] She taught mathematics and chemistry at the Ontario Ladies’ College in Whitby (1889–1891) before becoming a specialist in French and German at Stratford Collegiate Institute (1892–1900) and Lindsay Collegiate Institute (1901–1903).

[1] The Margaret Addison Scholarship for women pursuing postgraduate studies outside Canada was created to recognize her contributions to women in higher education.

In 1959 a residence was opened at Victoria College and named after her – Margaret Addison Hall.