Maria Matilda Aurora Widegren (1863–1938) was a Swedish educator and peace activist.
In 1879, after her mother's death, she moved with her father to Stockholm where she attended the normal school for girls.
She contributed to a number of text books, including one on Swedish grammar in 1896 that was published until the mid-1900s.
Following the organization's 1919 congress in Zürich, Widegren was an initiator of Internationella Kvinnoförbundet för Fred och Frihet, the Swedish branch of the Women's International League for Peace and Freedom, serving as chair from 1919 to 1934.
[1] Widegren died in Stockholm on 2 February 1938 and was buried at Hedvig Eleonora Church.