The Lost Leonardo is a 2021 internationally co-produced documentary film directed by . It follows the discovery and successive sales of the Salvator Mundi painting, allegedly done by Leonardo da Vinci, an artist for whom there are only a few attributed works in existence. The film chronicles the dramatic increases in the painting's value from its original purchase in 2005 for $1,175 to its auction in 2017 for $450 million when it became the most expensive artwork ever sold. The use of high-end artwork for hiding wealth, as well as the conflicts created by large commissions and other economic incentives, are explored in the film. It includes interviews with leading art experts and art critics on issues regarding the provenance and authenticity of the work.