| Johannes van Hoolwerff | |
| Fullname: | Johannes Cornelis van Hoolwerff |
| Nationality: | Dutch |
| Birth Date: | 13 April 1878 |
| Birth Place: | Hoorn, Netherlands |
| Death Place: | Heemstede, Netherlands |
| Classes: | 8 Metre |
| Show-Medals: | yes |
| Updated: | 2014-01-22 |
Johannes Cornelis van Hoolwerff (13 April 1878 in Hoorn – 2 August 1962 in Heemstede) was a sailor from the Netherlands, who represented his native country at the 1928 Summer Olympics in Amsterdam. Van Hoolwerff, as helmsman on the Dutch 8 Metre Hollandia, took the 2nd place with fellow crew members: Lambertus Doedes, Henk Kersken, Cornelis van Staveren, Gerard de Vries Lentsch and Maarten de Wit.