Christina Onassis was a Greek businesswoman, socialite, and heiress to the Onassis fortune. She was the only daughter of Aristotle Onassis and Athina Mary Livanos.

Aristotle Socrates Onassis was a Greek and Argentine business magnate. He amassed the world's largest privately-owned shipping fleet and was one of the world's richest and most famous men. He was married to Athina Mary Livanos, had a long-standing affair with opera singer Maria Callas, and was married to American former First Lady Jacqueline Kennedy.