Paolo Casarsa (born 2 July 1975) is a male decathlete from Italy.
He represented his native country at the 2004 Summer Olympics in Athens, Greece.
A two-time national champion in the men's decathlon (2002 and 2003) he set his personal best score (8056 points) on 6 June 2004 at a meet in Vienna, Austria.
His father Franco Casarsa was a javelin thrower.