Rodolfo Vantini (1792 – 1856) was an Italian architect. He is remembered for his Neoclassical contributions to architecture in his native city of Brescia and in the surrounding regions of northern Italy. His masterpiece is the design of Milan's Porta Orientale customs offices.
Vantini, who taught drawing at the Brescia high school, contributed to the development of Neoclassical architecture in Brescia. His works there include the Porta Pila (demolished in 1856) and the new cemetery, or Cimitero Vantiniano, Italy's first monumental cemetery designed in 1815. The Arco del Granarolo (Granarolo Arch), completed in 1822, is surmounted by a marble balustrade and stands on two marble pilasters. In 1825, he completed the raised dome of the Duomo Nuovo designed by Luigi Cagnola. He also worked on the restoration or completion of the city's main churches including San Francesco, San Clemente, Santa Maria dei Miracoli and San Nazaro.
Vantini's major achievement was designing the majestic Neoclassical customs offices at the Porta Orientale in Milan, completed in 1828.