King Petar the First is a 2018 Serbian-Greek war historical drama film directed by Petar Ristovski, starring Lazar Ristovski and Radovan Vujović. The screenplay is based on Milovan Vitezović's 1994 novel King Petar's socks. It was selected as the Serbian entry for the Best International Feature Film at the 92nd Academy Awards, but it was not nominated and the best film at the Festival of Serbian film in Chicago.