Ronaldo Ramos Caiado is a Brazilian politician who served as Governor of Goiás from 2019 to 2026, having previously represented the state as a Senator from 2015 to 2019. An orthopedic physician trained at the School of Medicine and Surgery of Rio de Janeiro, he comes from a family landowners and politicians from Goiás. He is the grandson of Antonio Ramos Caiado, an oligarch who served as a member of the Chamber of Deputies from 1909 to 1921 and a senator from 1921 to 1930. Caiado served as chairman of the União Democrática Ruralista in the late eighties (1986–1989), an organization that aims to defend the interests of landowners. In 2026, he was selected as the Social Democratic Party’s candidate for President of Brazil.