Ant̫nio Olinto dos Santos Pires (15 December 1860 Р25 February 1925) was the first president of the state of Minas Gerais in Brazil.
He founded the Minas Republican Party with João Pinheir.
He served as president of Minas Gerais from 17 November 1889 to 24 November 1889, was then a member of the government from 1890 to 1893 and minister of transportation from 1894 to 1896.
He directed the Estado de Minas and the Movement newspapers and collaborated on a Historical and Geographical Dictionary of Brazil/