Elizabeth Sanderson Haldane CH JP (/ˈhɔːldeɪn/; 27 May 1862 – 24 December 1937) was a Scottish author, biographer, philosopher, suffragist, nursing administrator, and social welfare worker. She was the sister of Richard Burdon Haldane, 1st Viscount Haldane and John Scott Haldane, and became the first female Justice of the Peace in Scotland in 1920. She was made a Companion of Honour in 1918.