Angelicoussis is chief executive of Angelicoussis Group, the biggest Greek ship owner. The Athens-based company controls bulk shipping and liquified natural gas carriers through its Maran Gas, Maran Tankers and Anangel Maritime units. Her fleet has almost 160 vessels, including active ships with a gross value of $16.5 billion.
Angelicoussis's fortune is derived from her ownership of Angelicoussis Group, the biggest Greek ship owner. The closely held company controls bulk shipping and liquified natural gas carriers through its Maran Gas, Maran Tankers and Anangel Maritime units. The group's fleet numbers about 160 vessels, according to its website.
Angelicoussis Group doesn't publish financial results. It's included in this analysis based on the asset value of its vessels as of November 2025, excluding charters, according to London-based VesselsValue.com, an online ship valuation database.
A discount of 45% is applied to reflect a typical debt level shipowners hold in their fleets, based on an analysis by Bloomberg. Angelicoussis and her family control the company through Cayman Islands-based holding company Angelicoussis Shipping Group.
The valuation was updated on April 24, 2026 for higher values of the fleet for Angelicoussis Group, leading to a rise of about $2 billion.
A representative for Angelicoussis declined to comment on her net worth.
Maria's grandfather, Antonis, started the family's shipping empire in 1947 after serving as a radio officer and training as a parachutist during the Second World War.
Unlike many other new ship owners, he largely avoided acquiring second-hand vessels and forged a fleet of more than three-dozen newbuilds over the next four decades, largely through establishing strong ties with Japanese shipyards. In 1987, he also became one of the first Greek shipping barons to take their business public by teaming-up with American Express Bank.
Maria's father, John, and her aunt, Anna, took over the business after Antonis's 1989 death but the two split amicably at the turn of the century, around the same time John reversed his father's listing and took the company private.
Maria didn't start out in shipping. She attended London's St. Paul's Girls' School before studying medicine at Cambridge University and working as a hospital doctor in the UK's National Health Service. She joined her family's business around 2009 and eventually became involved with her father in all activities in the group, which continued to expand even as Greek's economy collapsed following the Global Financial Crisis.
She took over the family business following her father's sudden death in April 2021.
She is married to Croatian sports agent Lawrence Frankopan. They lived in Greece and have three children.