Lucy in the Sky is a 2019 American psychological drama film loosely inspired by the life of NASA astronaut Lisa Nowak, who is portrayed by Natalie Portman. The film was directed, co-produced, and co-written by Noah Hawley in his feature directorial debut. In addition to Portman, the film stars Jon Hamm, Zazie Beetz, Dan Stevens, Colman Domingo, and Ellen Burstyn.

Lucy in the Sky had its world premiere at the 44th Toronto International Film Festival on September 11, 2019, and was theatrically released in the United States by Fox Searchlight Pictures on October 4, 2019. The film received negative reviews from critics and was a box-office bomb, grossing a mere $325,950 against its $21.4 million budget.