| Piet Jan van der Giessen | |
| Fullname: | Pieter Jan van der Giessen |
| Nationality: | Dutch |
| Birth Date: | 1 January 1918 |
| Birth Place: | Krimpen aan den IJssel, Netherlands |
| Death Place: | Krimpen aan den IJssel, Netherlands |
| Classes: | 5.5 Metre |
| Show-Medals: | yes |
| Updated: | 2014-01-06 |
Pieter Jan "Piet Jan" van der Giessen (1 January 1918 – 10 June 1993) was a sailor from the Netherlands, who represented his native country as at the 1952 Summer Olympics in Helsinki. Piet Jan, as crew member on the Dutch 5.5 Metre De Ruyter, took the 13th place with helmsman Wim de Vries Lentsch and fellow crew member Flip Keegstra.
In his professional life Van der Giessen was one of the owners and founder of the shipyard Van der Giessen de Noord.