Marcio Schiefler Fontes

Marcio Schiefler Fontes is a Brazilian judge and jurist. From a judicial career in his home state in Southern Brazil, he became auxiliary judge to the Supreme Federal Court during the massive investigation known as Operation Car Wash, a landmark anti-corruption probe in Brazil and other Latin American countries. After that, he was nominated Councillor of the National Council of Justice, in which he served as supervisor to the national prison system. In recent years, he has participated in international programs defending human rights and democracy and has been working in the Brazilian electoral justice system, currently focused on the 2026 national elections. In 2025 he edited the first comprehensive electronic guide on how Brazilian judicial institutions, especially the electoral courts, deal with current challenges posed by disinformation.