BillionaireNet
family
C
Rank #1753
GREECELogisticsShipping

Constantinos Martinos & family

Net Worth
$2.242B
0% (24h)
Constantinos Martinos, a prominent Greek billionaire, is a key figure in the global shipping industry. He is the owner of Thenamaris, a major shipping firm with a diverse fleet including tankers, bulk carriers, and LNG carriers. His wealth source is primarily from Shipping, reflecting his long and successful career in the maritime sector. His estimated net worth is $2.2 billion as of December 16, 2025.

The Full Dossier

Early Life

Constantinos Martinos was born in 1953 in Glyfada, Athens, Greece. He comes from the historic Martinos family, with his mother being one of the first female shipowners in Greece. His father, along with his mother, founded Thenamaris in 1971.

Rise to Success

Martinos co-founded Thenamaris Ships Management in 1972 with his mother and siblings. Over time, he became the principal manager after his siblings withdrew from the business. Under his leadership, Thenamaris has grown into a leading shipping company, operating a modern fleet of vessels. His sons, Nikolas and Ioannis, are also involved in shipping.

Key Business Strategies

Constantinos Martinos's primary source of wealth comes from shipping. Thenamaris operates a fleet of tankers, bulk carriers, containerships and LNG carriers. The company has adapted to new developments in the industry, including the management of LNG carriers. His company is known for its high-quality service and efficient operations.

Philanthropy

Martinos is known for his contributions to philanthropy, supporting initiatives in healthcare, education, and maritime conservation. His philanthropic efforts include funding the foundation of a new building with 115 hospital beds at the Asklipieio Hospital of Voula, a project valued at 10 million euros. Also, The Athanassios & Marina Martinos Welfare Foundation was founded in 2016, supporting health, education, and culture.

Career Timeline

2011

Recognized in Lloyd's List

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

1972

Co-founded Thenamaris Ships Management

Co-founded the company with his mother and siblings.

Philanthropic Impact

Healthcare$10M

Asklipieio Hospital of Voula

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

MultipleUnknown

Athanasios & Marina Martinos Welfare Foundation

Supports health, education, and culture.

Wealth Trajectory