Mary Collin (1 April 1860 – 22 July 1955)[1] was an English teacher and campaigner for women's suffrage during the early part of the 20th century.

Collin was the Chair of the Cardiff and District Women's Suffrage Society.

[2] Mary Collin was born in Cambridge and educated at Notting Hill High School for Girls,[3] later graduating from Bedford College, London, in French and German.

[5] Collin's position in the community enabled her to command respect as a leader of the women's suffrage movement.

[7] A portrait of Miss Collin, by an unknown artist, has been rediscovered at St Fagans National Museum of History and put on display.