Christina Onassis (Greek: Χριστίνα Ωνάση; 11 December 1950 – 19 November 1988) was an American-born, Greek businesswoman, socialite, and heiress to the Onassis fortune. She was the only daughter of Aristotle Onassis and Athina Onassis.
Christina Onassis, the only daughter of the Greek Argentine shipping magnate Aristotle Onassis and his first wife, Athina Onassis, was born in New York City at LeRoy Sanitarium. Her maternal grandfather was Stavros G. Livanos, founder of the Livanos shipping empire. Onassis had an older brother, Alexander. She and Alexander were raised and educated in France, Greece, and England. She attended the Headington School in Oxford and Queen's College, London from 1968 to 1969.
Christina's parents divorced in 1960, precipitated by her father's affair with opera singer Maria Callas. He later married former First Lady Jacqueline Kennedy, widow of President John F. Kennedy, in 1968. Christina and Alexander reportedly distrusted Kennedy and never warmed to her. Christina's mother, Athina, married Stavros Niarchos in 1971.