Guilherme Amado, Brazil, is an investigative reporter for the daily newspaper O Globo and a 2017-2018 John S. Knight Journalism Fellow at Stanford.

Born and raised in Rio de Janeiro, Amado investigated organized crime in Latin America, militia groups in Rio de Janeiro, and corrupt politicians in Brasília. In 2014, after six months traveling through South America to report on drug-dealing, he developed a WhatsApp-based social network, Narcosur Network, to connect Latin American reporters specialized in writing about organized crime.

In 2016, Amado was the only Brazilian member of a multinational team of reporters who covered the Car Wash Operation, the biggest investigation of corruption in Brazil's history. In 2017, he and his editor published the story that revealed that the current Brazilian President Michel Temer had been taped endorsing the payment of hush money to a politician jailed for corruption.

Amado is also the vice-president of the Brazilian Association of Investigative Journalism. He has received the two most distinguished awards in Brazilian journalism: the Esso Journalism Award and the Tim Lopes Investigative Journalism Award.