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September 11, 2026Short & citedBlog
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People File • Heiress

Athina Onassis

Athina Onassis is a French-Greek heiress and equestrian, best known as the only surviving descendant of shipping magnate Aristotle Onassis through his daughter Christina Onassis.

Updated September 11, 20261 min readCited sources

Athina Onassis is a French-Greek heiress and equestrian, and the only surviving descendant of Aristotle Onassis. She has competed in show jumping under the Greek flag.

What it is

Athina Onassis was born Athina Hélène Roussel on 29 January 1985 in Neuilly-sur-Seine, France, to Christina Onassis and Thierry Roussel. She is the granddaughter of Greek shipping magnate Aristotle Onassis and the sole heir to the Onassis family fortune.

Why it matters

As the only surviving descendant of Aristotle Onassis, Athina inherited a large share of his fortune from her mother Christina. Her family background is closely tied to the Onassis shipping dynasty, and she is often described as a private heiress who avoids the public spotlight.

Key details

Athina is an active equestrian, competing in show jumping events. She is known for maintaining a low public profile, with media coverage focusing on her rare appearances and her family legacy. Her equestrian career is a defining part of her public identity.

In short

  • Only surviving descendant of Aristotle Onassis
  • Born in 1985 in Neuilly-sur-Seine, France
  • Competitive show jumper
  • Keeps a private public life

Quick questions

Who is Athina Onassis?
Athina Onassis is a French-Greek heiress and equestrian, and the only surviving descendant of Aristotle Onassis.
What is Athina Onassis known for?
She is known for being the heir to the Onassis family fortune and for competing in show jumping.
What is her connection to Aristotle Onassis?
She is Aristotle Onassis's granddaughter through his daughter Christina Onassis.

Sources

  1. Wikipediahttps://en.wikipedia.org/wiki/Athina_Onassis
    Supports: Birth date, birth name, birthplace, nationality, family relationship to Aristotle Onassis, and equestrian career.
  2. Wikipediahttps://fr.wikipedia.org/wiki/Athina_Onassis
    Supports: French-Greek identity, heiress status, and show jumping career.
  3. Wikipediahttps://de.wikipedia.org/wiki/Athina_Onassis
    Supports: Birthplace, birth name, nationality, and identification as an heiress and show jumper.