Mario Donadoni (born 19 November 1979) is an Italian retired footballer who played as a defender.
In 2009, he was transferred by the Italian Lega Pro Prima Divisione team U.S. Siracusa for which he played 9 games until 2010. In July 2010, Mario Donadoni was transferred by the Romanian Liga I team FCM Târgu Mureà  as a free agent.