Mariano Scartezzini (born 7 November 1954) is a retired long-distance runner from Italy, who mainly competed in the men's 3,000 metres Steeplechase event.
He won seven medals, at senior level, at the International athletics competitions.
He finished in ninth place in this event at the inaugural 1983 World Championships in Helsinki, Finland. He is three-time national champion (1979, 1981 and 1983) in the event. He has 30 caps in national team from 1975 to 1984.
Mariano Scartezzini has won 5 times the individual national championship.