Barbarossa (also released as Barbarossa: Siege Lord or Sword of War) is a 2009 Italian English-language film set primarily in northern Italy during the late 12th century. Despite the film's title, Friedrich "Barbarossa" features only as a supporting character in this film, which is primarily concerned with the struggle of the Lombard League, which struggled to maintain independence from the Holy Roman Empire, led by the legendary Guelph warrior Alberto da Giussano.

This film was co-written and directed by Renzo Martinelli. It has been released on DVD in the United States under the title Sword of War, and elsewhere under the title Barbarossa: Siege Lord.