José Múcio Monteiro Filho (born 25 September 1948) is a Brazilian civil engineer and politician, affiliated with the Democratic Renewal Party (PRD), and is currently Brazil's Defense Minister.

In the coalition, he was only behind former governor Roberto Magalhães (PFL), starting his new deputy career with 205 341 votes.

He was re-elected again in the 1994 elections, this time in a coalition with the PSDB candidate Fernando Henrique Cardoso, the favorite in the race for the presidency.

[1][2] He became notable for being leader of the PTB at the height of what became known as the 2005 monthly allowance scandal, having acted as a defender of the then president of his party, deputy Roberto Jefferson, who had his mandate revoked.

On November 23, 2007, Lula's government leader in the Chamber of Deputies, received and accepted the president's invitation to assume the position of Minister of Institutional Relations, replacing Walfrido dos Mares Guia (PTB/MG), who resigned from the to have his name involved with that of toucan politicians from Minas Gerais, in the so-called "Mensalão tucano".