Sir Sagramore of Hungary (or Sagremor) is a Knight of the Round Table in the Arthurian legend. His characterization varies from story to story, though he is surprisingly prolific; he appears in a number of early stories, such as Chrétien de Troyes' works, and he turns up in all the cyclical versions. He gains a number of nicknames, including "The Impetuous" and "le Desirous."

According to the Lancelot-Grail Cycle, Sagramore is the son of the King of Hungary and the daughter of the Eastern Roman Emperor; he is even an heir to the throne of Constantinople. His father dies while he was still young, and his mother accepts the proposal of King Brandegoris of Estangore in Britain. When he is fifteen, Sagramore travels to Britain to join them and to become one of King Arthur's knights. Upon arrival in Britain Sagramore engages Arthur's Saxon enemies, and receives aid from Arthur's nephew Gawain and his brothers. The group are subsequently knighted by Arthur.

The Lancelot-Grail describes him as a good knight, but quick to anger. When fighting, he would go into a frenzy not unlike the Irish hero Cúchulainn's warp spasm; when he came down, he would feel ill and hungry. As he was wont to do, Sir Kay gave him a nickname, "Morte Jeune" (dead youth), because he would sometimes go into epilepsy-like fits. The Lancelot-Grail recounts a number of his adventures, often centered around rescuing damsels, and mentions that he had a daughter by one of his paramours who was raised at Arthur's court by Guinevere. His half-sister, Brandegoris' beautiful daughter Claire, falls in love with Sir Bors and sleeps with him; their child is Elyan the White. He dies by Mordred's hand at the Battle of Camlann as one of Arthur's last remaining warriors.