Cornelia Pompeia Magna (born 47/35 BC, year of death unknown) was the daughter and youngest child to Pompeia Magna and suffect consul Lucius Cornelius Cinna. Cornelia’s maternal grandparents were triumvir Pompey and his third wife Mucia Tertia, while her paternal grandfather was an elder Lucius Cornelius Cinna. Her full-blooded brother was Gnaeus Cornelius Cinna Magnus; a half-sibling from her mother’s first marriage to senator Faustus Cornelius Sulla. Her mother died before 35 BC and was raised by her father.