| Nationality: | Italian |
| Sport: | Athletics |
| Event: | Combined events |
| Birth Date: | 1975 7, df=y |
| Birth Place: | Udine |
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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.
| 1997 | European U23 Championships | Turku, Finland | — | Decathlon | DNF | |
| 2001 | Tunis, Tunisia | 3rd | Decathlon | 7522 pts | ||
| 2002 | Munich, Germany | 10th | Decathlon | 7807 pts | ||
| 2003 | Götzis, Austria | — | Decathlon | DNF | ||
| Paris, France | — | Decathlon | DNF | |||
| 2004 | Athens, Greece | 28th | Decathlon | 7404 pts |