Constantinos Martinos & family

CEO, Thenamaris

Real-Time Net Worth

$2.2B

As of December 2025

Age

Source

Shipping

Industry

logistics

Citizenship

Biography

Constantinos Martinos, born in 1953, is a prominent Greek billionaire known for his significant contributions to the shipping and maritime industries. As the owner of the Greek shipping firm Thenamaris, he has a net worth of $2.24 billion. Martinos's wealth is primarily derived from shipping, and he is a key figure in the logistics sector. Over his career, he has overseen a fleet of vessels, including tankers, bulk carriers, and LNG carriers. His achievements include co-founding Thenamaris in 1972 and expanding it into a leading global shipping company. Martinos's family also contributes to his wealth, with his son running Thenamaris and another son founding his own shipping services company. His net worth places him at rank #1747 globally among billionaires.

Wealth Over Time

Portfolio Holdings

Thenamaris

In-Depth Profile

Early Life and Career

Constantinos "Dinos" Martinos was born in Glyfada, Athens, in 1953. He comes from the historic Martinos family, deeply rooted in the shipping industry. His mother, Athina Martinos, was one of the first female shipowners in Greece, who founded the shipping company Thenamaris in 1971. From a young age, Martinos was involved in the family business, managing the fleet in the mid-1960s.

Rise to Success

In 1972, Martinos co-founded Thenamaris Ships Management with his mother and siblings. Over time, he became the principal manager. Under his leadership, Thenamaris has grown into a leading global shipping company, operating a modern fleet of over 95 vessels, including tankers, bulk carriers, LNG carriers, and container ships. Thenamaris is now run by his son, Nikolas.

Key Business Strategies

Martinos's key business strategies have focused on expanding and modernizing Thenamaris's fleet, positioning the company as a leader in maritime transportation. This has involved leveraging technological advancements and strategic partnerships to optimize operational efficiency and maintain high safety standards across the fleet.

Philanthropy

Constantinos Martinos is known for his philanthropic efforts. His family supports initiatives in education, healthcare, and maritime conservation. He funded and founded a new building with 115 hospital beds at the Asklipieio Hospital of Voula. Further information on specific amounts and initiatives is not available in the search results.

Career Milestones

1972

Co-founded Thenamaris Ships Management

Co-founded Thenamaris Ships Management with his mother and siblings.

2011

Named in Lloyd's List Top 100

Named number 67 in the list of the Top 100 most influential people in the shipping industry.

Philanthropy & Social Impact

Healthcare

Hospital building

$10M

Funding and foundation of a new building with 115 hospital beds at the Asklipieio Hospital of Voula.