The Carritt family is an English political family based in Oxford, known for its involvement in anti-fascist activism, Marxist politics, and academic achievements within Oxford University. For much of the 20th century, the involvement of the family revolved around the Communist Party of Great Britain, as various members have traditionally been members of the British communist movement and have served as notable anti-fascist and anti-colonial activists, spies, philosophers, professors, politicians, newspaper editors, and revolutionaries.

Liesel Carritt was a German teacher, translator, refugee, and later a communist revolutionary who fought against fascism alongside the International Brigades during the Spanish Civil War. As a teenager, Liesel and her German-Jewish family fled the Nazis and came to Oxford, England, where local people rescued them by providing them with the necessary financial security to ensure that the British government would not deport them back into the hands of the Nazis. Her father was the former senior editor of Weimar Germany's main liberal newspaper, the Frankfurter Zeitung.