Catherine Helen Spence (31 October 1825 – 3 April 1910) was an Australian author, teacher, journalist, politician and leading suffragette. In 1897 she became Australia's first female political candidate after standing (unsuccessfully) for the Federal Convention held in Adelaide. Known as the "Greatest Australian Woman" and given the epitaph "Grand Old Woman of Australasia", Spence is commemorated on the Australian 5 dollar note issued for the Centenary of Federation of Australia