João Roberto Marinho Net Worth

João Roberto Marinho has an estimated net worth of $3.4 billion, according to Forbes Real-Time Billionaires, João Roberto Marinho profile (figures as of October 20, 2026). That is up from $2.5 billion in 2019.

João Roberto Marinho is a Brazilian businessman and one of the three brothers who control Grupo Globo, Brazil's largest media group. He was born in Rio de Janeiro on September 16, 1953, the third of four children of Roberto Marinho. His grandfather Irineu Marinho launched the O Globo newspaper in 1925 but died just 25 days after the first issue, and his oldest son took over.

João Roberto started out as a journalist at O Globo, one of Brazil's most influential newspapers. He held several jobs there before becoming vice president in 1982. In the mid-1990s the family moved leadership of the group to Roberto Marinho's three sons. Today João Roberto is executive president of Grupo Globo and chairman of its board of directors. He is also chairman of the group's editorial board and of its institutional committee.

How the Marinho family makes money

The family's wealth comes from Grupo Globo, a giant in Brazilian media. It includes Rede Globo, the country's largest broadcaster, along with Brazil's largest newspaper company. It also owns Globosat, Brazil's largest pay TV provider. Together these businesses span broadcast television, newspapers and pay TV.

João Roberto and his brothers, Roberto Irineu and José Roberto, inherited control of the group, and all three are billionaires. The family has also used its wealth to back culture in Brazil, helping to set up the Museum of Tomorrow, The Football Museum and the Museum of the Portuguese Language. Forbes does not count him as self-made, since the business came from his family.

How Forbes has valued João Roberto Marinho

Forbes valued Marinho at $2.5 billion in 2019. His fortune fell to $1.8 billion in 2020 and stayed there in 2021, then rose to $2 billion in 2022. It returned to $1.8 billion in 2023 before rising to $2.1 billion in 2024. For several years his fortune hovered around the $2 billion mark, rising and falling with the media business.

Recent years brought sharp gains. Forbes estimated him at $3 billion in 2025 and $4.1 billion on its 2026 World's Billionaires List, his highest figure so far. As of October 20, 2026, its real-time tracker showed $3.4 billion. Outside work he is a keen amateur rider and was part of a Brazilian champion team in 2010, riding a horse named Haria.