Aristotle Onassis Net Worth (Updated 2025).

Aristotle Onassis, born in 1906 in Smyrna, Greece, began his entrepreneurial journey at a young age. After his family’s tobacco business was ruined during the Greco-Turkish War, Onassis moved to Argentina at the age of 21, where he started working for an uncle’s tobacco company. He quickly rose through the ranks, demonstrating his business acumen and ambition.

In the 1930s, Onassis returned to Greece and started his own tobacco company, Onassis Bros. He expanded his business into shipping, buying his first ship in 1935 and forming the Onassis Shipping Company. His fleet grew rapidly, and by the 1950s, he was one of the world’s leading shipowners, with a fleet of over 50 ships. This success made him a prominent figure in the business world and brought him significant wealth and fame.

**Aristotle Onassis’s Current Net Worth (2025)**

As of 2025, Aristotle Onassis’s net worth is estimated to be around $10 billion, according to latest available information. This figure takes into account the value of his business empire, real estate, and other assets.

**Career**

Onassis, a Greek shipping magnate, built his fortune through his company, Onassis Shipping Corporation. He pioneered the use of supertankers for oil transport, revolutionizing the shipping industry. He also owned and operated Olympic Airlines.

**Other Ventures**

Beyond shipping, Onassis diversified his portfolio. He invested in real estate, including the iconic Aristotle Onassis Estate on Skorpios Island, Greece. He also owned the New York Herald Tribune and had interests in horse racing and aviation.

**Assets**

Onassis’s assets include a vast fleet of ships, real estate holdings, and investments in various industries. His most famous asset is the former yacht, Christina O, which he gifted to his daughter, now owned by a Russian businessman.

**Annual Income**

Onassis’s annual income varied year to year, but at the height of his career, it was estimated to be in the hundreds of millions of dollars. His income came primarily from his shipping business and other ventures.

Frequently Asked Questions about  Aristotle Onassis

**Frequently Asked Questions: Aristotle Onassis Net Worth**

1. What was Aristotle Onassis’ net worth?

Aristotle Onassis’ net worth was estimated to be around $500 million at the time of his death in 1975, adjusting for inflation that would be approximately $2.2 billion today.

2. How did Aristotle Onassis make his fortune?

Onassis made his fortune primarily through shipping, but he also had interests in aviation, hotels, and real estate. He started with a small shipping business and built it into one of the largest in the world, transporting goods like oil and grain.

3. Was Aristotle Onassis a billionaire?

No, Aristotle Onassis was not a billionaire. His net worth was estimated to be around $500 million at the time of his death.

4. Who inherited Aristotle Onassis’ fortune?

Onassis’ fortune was inherited by his daughter, Christina Onassis. She received a larger share of the estate, while her brother Alexander received a smaller portion.

5. What was Aristotle Onassis’ most famous asset?

Aristotle Onassis’ most famous asset was likely his yacht, the Christina O. It was one of the most luxurious yachts in the world and was famously used by him and his guests, including world leaders and celebrities.

6. How did Aristotle Onassis become known as the “Richest Man in the World”?

Onassis was often referred to as the “Richest Man in the World” due to his vast wealth and the success of his business ventures. However, he was never officially recognized as the wealthiest person in the world.

7. What was Aristotle Onassis’ relationship with Jackie Kennedy like?

Onassis and Jackie Kennedy had a complex relationship. They were married from 1968 until his death in 1975. Their relationship was marked by both love and controversy, as it was seen as a surprising match by many.

8. Did Aristotle Onassis have any philanthropic endeavors?

Yes, Onassis was known to be involved in philanthropic endeavors. He donated to various causes, including hospitals and educational institutions, both in Greece and internationally.

9. What was Aristotle Onassis’ cause of death?

Onassis died of respiratory failure at the age of 69. He had been suffering from a lung condition for some time before his death.

10. Where is Aristotle Onassis buried?

Onassis is buried in the family mausoleum at the Archdiocesan Cathedral of the Holy Trinity in New York City.