Gregório Fortunato (24 January 1900 – 23 October 1962) was the head of the personal guard of Brazilian president Getúlio Vargas.

[4] On 5 August 1954, the episode known as the "Tonelero Street Attack" took place, which was an assassination attempt on journalist Carlos Lacerda, a staunch opponent of Getúlio Vargas.

Gregório Fortunato was accused of being the mastermind of the crime, from which Lacerda was slightly wounded, not having the same luck as the major of the Brazilian Air Force, Rubens Florentino Vaz, who was shot and died on his way to the hospital.

[6] The seized documents also revealed that Gregório bought two properties for 4 million from Getúlio's youngest son, Manuel Sarmanho Vargas, known as Maneco, who was in a difficult financial situation.

On 23 October 1962, and according to the official report, Gregório Fortunato was murdered at the Frei Caneca Penitentiary, in Rio de Janeiro, after a fight with fellow inmate Feliciano Emiliano Damas, which is speculated by some as a witness elimination, since Gregório had written a personal notebook, the only object of his property that disappeared in prison after his death.