Margarethe Faas-Hardegger (20 February 1882 in Bern – 23 September 1963 in Minusio) was a Swiss women's rights activist, trade unionist and the leading figure of the Swiss women workers' movement at the beginning of the 20th century. Her leadership saw the Swiss women workers' movement gain a political and feminist profile. Faas-Hardegger made women's suffrage part of the Swiss trade unions' platform, as well as and the idea of paid housework.