| Petronella de Jong | |
| Fullname: | Petronella Catharina de Jong |
| Nationality: | Dutch |
| Birth Date: | 26 July 1970 |
| Birth Place: | Sint Jacobiparochie |
| Height: | 1.72m (05.64feet) |
| Classes: | Yngling |
| Club: | Koninklijke Watersportvereniging Sneek |
| Show-Medals: | yes |
| Updated: | 15 February 2014 |
Petronella Catharina de Jong (born 26 July 1970 in Sint Jacobiparochie) is a sailor from the Netherlands. De Jong represented her country at the 2004 Summer Olympics in Athens. With helmsman Annelies Thies and fellow crew member Annemieke Bes De Jong took 4th place in the Yngling.