Diogo Figueira da Rocha (October 9, 1863 – May 1, 1897), better known as Dioguinho ("Little Diogo"), was a Brazilian career criminal and serial killer acting within São Paulo at the end of the 19th century.

He is supposedly responsible for more than 50 murders between 1894 and 1897.

Tucked away in the far west of the state, he was hunted down by government task forces and was pronounced dead in 1897 after a shootout with the authorities on the banks of the Mojiguaçu River.

[1][2] His exploits were exhaustively covered by the press at the time, and later the subject of several books, such as Dioguinho, published in 1901 by João Rodrigues Guião, Dioguinho, narratives of an accomplice of dialent, published in 1903 by Antonio de Godoi Moreira e Costa, the 1917 film Dioguinho[n 1][3] and Dioguinho, the matador of the fists of income, by journalist João Garcia, published in 2002.

This Brazilian biographical article is a stub.