The man behind Son of Saul will be flying home with an Oscar after Sunday night.
Director Lézlé Nemes dedicated the award to star Géza Rörig and “the incredible cast who believed in this film when no one else did.”
He added: “Even in the darkest hours of mankind there might be a voice within us that allows us to remain human – that’s the hope of this film.”
The film also won for the same category at the Golden Globes in January.
Son of Saul was up against black-and-white Colombian film Embrace of the Serpent; Mustang, a French film about five young Turkish sisters; Theeb out of Jordan, and A War, a Danish film following the story of an Army commander in Afghanistan.
Notable past winners include Roberto Benigni’s Life Is Beautiful in 1997, Ang Lee’s Crouching Tiger, Hidden Dragon in 2000 and Michael Haneke’s Amour in 2012.
The 88th annual Awards, hosted by Chris Rock, are being presented live on ABC from the Dolby Theater in Hollywood, California.