Roberto Irineu Marinho Net Worth

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

Roberto Irineu Marinho is a Brazilian businessman and one of the three brothers who control Grupo Globo, the largest media group in Brazil. Born in Rio de Janeiro on October 13, 1947, he is the eldest son of the late tycoon Roberto Marinho. Early in his career he spent time as an intern at the American TV network ABC, gaining a look at how a major broadcaster worked.

The family business dates back to 1925, when his grandfather Irineu Marinho launched a newspaper. Irineu died just 25 days after the first issue came out, and his son Roberto took charge and built the company into a media giant. When Roberto Marinho died in 2003, control passed to his three sons, Roberto Irineu, Joao Roberto and Jose Roberto, who are all billionaires.

How Roberto Irineu Marinho makes money

Most of Marinho's wealth comes from his stake in Grupo Globo. The group owns Rede Globo, Brazil's largest broadcaster, along with the country's largest newspaper company and Globosat, its largest pay TV provider. Owning leading outlets in television, print and pay TV has given the family a strong position in Brazil's media market for decades.

For years Roberto Irineu ran the group day to day as executive president. In December 2017 he stepped down from that role, and for the first time someone from outside the family took over the job. He stayed on as vice president of the board, which his brother Joao Roberto chairs. He also owns Sertaozinho Farm, which grows the beans for Orfeu gourmet coffee, a smaller business outside of media.

How Forbes has valued him over the years

Forbes estimated Marinho at $2.5 billion in 2019. The figure slipped to $1.8 billion in 2020 and stayed there in 2021, then moved to $2 billion in 2022. It dipped back to $1.8 billion in 2023 before returning to $2 billion in 2024. For several years his estimate stayed in a fairly narrow range, reflecting a mature media business in a changing industry.

More recently, his estimate has risen. Forbes put him at $3 billion in 2025 and $3.3 billion on its 2026 World's Billionaires List. As of October 20, 2026, the Forbes real-time billionaires tracker showed him at $3.4 billion, his highest figure in this period. He shares the family's media fortune with his two brothers, each holding a stake in the group their grandfather started with a single newspaper.