Barbara Lindsay Curthoys, née McCallum (21 June 1924 – 28 September 2000) was an Australian feminist and communist activist.

She joined the Ashfield branch of the Communist Party of Australia after leaving school, and in 1942 during World War II served in the Women's Auxiliary Australian Air Force as a wireless telegraphist.

She joined the local branch of the Union of Australian Women in 1954, becoming secretary from 1954 to 1960 and serving on the national body in 1960, 1963 and 1970.

She was one of nine NSW Communist Party of Australia candidates for the 1963 Federal Election, standing for the seat of Shortland.

She and co-author Audrey McDonald wrote book together on the a history of the Union of Australian Women, More Than a Hat and Glove Brigade.