Diego Fortuna (born 14 February 1968) is a retired male discus thrower from Italy.
He represented his native country in two consecutive Summer Olympics (1996 and 2000). He won the men's discus throw event at the 2001 Mediterranean Games, and set his personal best (64.69 m) on 24 June 2000 at an international meeting in Ravenna.
Fortuna won 14 national championships at individual senior level.