Pierre Joly dit Dumesnil
| Personal information | |
|---|---|
| Nationality | French | 
| Born | 10 December 1931 | 
| Sport | |
| Sport | Swimming | 
Pierre Joly dit Dumesnil (born 10 December 1931) is a French former swimmer. He competed in the men's 200 metre breaststroke at the 1952 Summer Olympics.