Mario Umberto Borzacchini

Mario Umberto Borzacchini, born Baconino Borzacchini and known as Baconin (Terni, September 28, 1898 – Monza, September 10, 1933), was an Italian racing driver.

Active during the interwar period, he earned the title of vice-European champion in 1932 and finished third in 1931.