Behind the Curve is a 2018 documentary about flat Earth believers in the United States. Directed by Daniel J. Clark, the film was released in the United States on November 15, 2018, and for wide release on Netflix in February 2019.

The documentary offers an examination of the flat Earth idea from various perspectives, including prominent flat-Earthers Mark Sargent, Nathan Thompson, and Patricia Steere, as well as astrophysicists from Universities including UCLA and CalTech. It features clips from the 2017 International Flat Earth Conference, held in North Carolina, which attracted hundreds of attendees.