Designing Denmark: Eugenics, Welfare, and Popular Culture in the 20th Century traces the genealogy of eugenic common sense in media, performance, and reproductive technology from the early 20th century to the present. Through archival research and close readings of cultural, media, and technological artifacts this dissertation presents a history of how a differential valuation of human worth grounded in race science and eugenics co-developed with social democratic welfare in early 20th century Denmark and in late 20th century Kalaallit Nunaat (Greenland). Deploying insights from feminist studies, media and cultural studies, science and technology studies (STS), and decolonial and Indigenous studies, this dissertation makes the claim that the fabric of modern Danish welfare and culture is inextricable from the overlapping histories of eugenics and colonialism and their politics of selective disposability.Chapter one examines the understudied eugenic cultural productions of feminist organizer Thit Jensen, specifically her speeches, lectures, and her 1929 play, The Stork, and its subsequent cinematic adaptation in 1943. Chapters two and three examine the eugenic cultural work of prominent bourgeois women’s organizations, the Danish Women’s Society and the Copenhagen Housewife Association, particularly their baby competitions and print media propaganda on the so-called “population question.” Chapter four reveals that popular eugenic concerns lead to the production of a state sponsored motherhood campaign and the founding of the national institution Mothers’ Aid (Mødrehjælpen) which, from 1939, facilitated eugenic population control for decades to come. Chapter five demonstrates that Mothers’ Aid collaborated with the eugenically oriented US organization the Population Council, to launch the intrauterine device (IUD) program and print media campaign in the Danish neo-colony Kalaallit Nunaat, which led to reproductive abuses. This dissertation argues that these multi-mediated efforts produced a eugenic common sense in Denmark, which led to the systematic targeting of the working class, women, and poor, disabled, queer, and Indigenous people for sexual and reproductive control.