Concrete Utopia (Korean: 콘크리트 유토피아) is a 2023 South Korean disaster-thriller film co-written and directed by Um Tae-hwa, based on the second part of the webtoon Pleasant Outcast, by Kim Soongnyung. Set in Seoul, which has been hit by a massive earthquake, it depicts survivors who struggle for survival. The film stars Lee Byung-hun, Park Seo-joon, and Park Bo-young. It was theatrically released on August 9, 2023.The film received generally positive reviews from critics and was selected as the South Korean entry in the Best International Feature Film category for the 96th Academy Awards, on August 17, 2023. However, it did not make it to the shortlist.