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Billionaire Profile
Constantinos Martinos & family
Global Rank
#1891

Image: Unsplash Contributor | Unsplash License | via Unsplash

Constantinos Martinos & family

CEO, Shipping
GREECE
Real-Time Net Worth
$2.245B
Estimated based on Shipping stock value as of April 20, 2026
0% (24h)
Age
73
Source
Shipping
Industry
Logistics
Citizenship
GREECE

Biography

Constantinos Martinos, born in 1953, is a Greek billionaire and a prominent figure in the shipping industry. He is the owner of Thenamaris, a leading shipping firm, and is the patriarch of a family with a significant presence in global maritime trade. His career began in the mid-1960s when he began managing the family fleet, with his mother Athina Martinos, a pioneering shipowner, co-founding Thenamaris in 1972. With an estimated net worth of $2.2 billion as of March 2026, Martinos has built a substantial fortune through shipping. His leadership has been instrumental in Thenamaris' growth, currently managing a fleet of 87 vessels, including tankers, bulk carriers, and container ships. His commitment to corporate social responsibility is evident through various philanthropic initiatives. Martinos's achievements have solidified his legacy in the maritime sector.

Fact Checked
Verified by Editorial Team
Live Data
Updated 4/20/2026

Wealth Over Time

In-Depth Profile

Early Life and Family

Constantinos "Dinos" Martinos was born in Glyfada, Athens, Greece, on January 28, 1953. He comes from the historic Martinos family, which has a rich legacy in Greek shipping. His mother, Athina Martinos (née Methenitis), was one of the first female shipowners in Greece, founding Thenamaris in 1971. This family background laid the foundation for his future in the shipping industry.

Rise to Success

Martinos began his involvement in the family shipping business in the mid-1960s, helping manage the family fleet. In 1972, he co-founded Thenamaris Ships Management with his mother and brothers, Athanasios and Andreas. Although his brothers later established their own ventures, Constantinos remained at the helm of Thenamaris, guiding its growth over the years.

Key Business Strategies

Under Constantinos Martinos's leadership, Thenamaris has become a prominent shipping firm. As of 2024, the company manages a fleet of 95 vessels, encompassing tankers, bulk carriers, LNG carriers, and container ships. This diversification reflects a strategic approach to navigating the complexities of the global shipping market. His strategic vision and commitment to excellence have been crucial to the company's success. His son, Nikolas Martinos, currently serves as CEO, ensuring the continuation of the family legacy.

Philanthropy

Constantinos Martinos is also known for his philanthropic activities. The family has supported various initiatives in healthcare, education, and maritime conservation. His contributions reflect a commitment to giving back to the community and nurturing future talent within the maritime industry. He is also noted for supporting the restoration of the Greek Orthodox Church of Saint George in Cairo, Egypt.

Career Milestones

1972

Cofounded Thenamaris Ships Management

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

2011

Recognized by Lloyd's List

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

Philanthropy & Social Impact

Healthcare

Support for hospitals

Undisclosed

Supported major hospitals such as Sotiria, Papageorgiou, and Attikon.

Religious

Restoration of Greek Orthodox Church

Undisclosed

Supported the restoration of the Greek Orthodox Church of Saint George in Old Cairo, Egypt

Business Philosophy & Leadership

Notable Quotes

"Constantinos Martinos remains a respected figure within the maritime community, known for his resilience, innovation, and contributions to advancing the shipping industry's standards and practices globally."

Leadership Principles

Strategic Vision

Demonstrates strategic foresight in navigating industry challenges and opportunities.

Commitment to Excellence

Maintains a focus on high standards and operational efficiency.

Corporate Social Responsibility

Supports philanthropic initiatives to contribute to the community.

Controversies & Challenges

2020

US Sanctions

U.S. imposed sanctions on ships owned by Thenamaris for carrying Venezuelan oil.

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