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.

• Italian all-time lists - Decathlon

• Paolo Casarsa at World Athletics
• Paolo Casarsa at the Italian Athletics Federation (in Italian)
• Paolo Casarsa at Olympedia