Francisco Waldir Pires de Souza (21 October 1926 – 22 June 2018) was a Brazilian politician and professor. He served as the Minister of Defence under President Luiz Inácio Lula da Silva,List of Historical Brazilian Minister of Defence from the official Defence Ministry Website (in Portuguese) before being fired for gross incompetence and inaction during Brazil's aviation crisis of 2006–2007.Brazil's defence minister fired, BBC News, 25 July 2007. At the time of the crisis, he was accused by some in Brazil of nearing senility. He was replaced by former Supreme Court President Nelson Jobim. He presided over the Brazilian Mission to Haiti.
He taught constitutional law at the University of Brasília.
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