| Jan Pieterse | |
| Birth Date: | 29 October 1942 |
| Birth Place: | Oude-Tonge, Netherlands |
| Show-Medals: | yes |
Johannes ("Jan") Aloysius Maria Pieterse (born 29 October 1942) is a former professional racing cyclist from the Netherlands, who won the gold medal in the Men's 100 km Team Trial at the 1964 Summer Olympics, alongside Bart Zoet, Evert Dolman, and Gerben Karstens. At the same Olympics, he finished in 42nd place in the Men's Individual Road Race.[1]