Knife+Heart (French: Un couteau dans le cœur, lit. 'A Knife in the Heart') is a 2018 horror thriller film directed by Yann Gonzalez, who co-wrote the screenplay with Cristiano Mangione. It was produced by Charles Gillibert and stars Vanessa Paradis, Nicolas Maury, Kate Moran, Jonathan Genet and Romane Bohringer. An international co-production of , Mexico and Switzerland, the film was selected to compete for the Palme d'Or at the 2018 Cannes Film Festival. The lead character is loosely based on Anne-Marie Tensi, a female producer specialized in gay pornography who was active in in the 1970s and 1980s.