One Child Nation is a 2019 American documentary film directed by Nanfu Wang and Jialing Zhang about the fallout of China's one-child policy that lasted from 1979 to 2015. The film premiered at the Sundance Film Festival on January 26, 2019 where it was awarded the U.S. Grand Jury Prize: Documentary Award, and was theatrically released in the United States on August 9, 2019, by Amazon Studios. It received positive reviews from critics and was nominated for the Gotham Independent Film Award for Best Documentary.