Johannes van Hoolwerff
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.

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1878 births
1962 deaths
Sportspeople from Hoorn
Dutch male sailors (sport)
Sailors at the 1928 Summer Olympics – 8 Metre
Olympic sailors for the Netherlands
Medalists at the 1928 Summer Olympics
Olympic medalists in sailing
Olympic silver medalists for the Netherlands
20th-century Dutch people