Mezue ahịrịokwu na-esonụ: Jan van Houwelingen (a mụrụ na Jenụwarị 12, 1955 na Heesselt, Gelderland) bụ onye na-agba ịnyịnya ígwè na-agba ọsọ na Netherlands, onye bụ onye na-agba ịnyịnya ígwè ọkachamara site na 1979 ruo 1987. Nwanne ya nwoke nke okenye Adri (amụrụ na 1953) bụkwa onye na-agba ịnyịnya ígwè ọkachamara na 1980s. N'afọ 1978, Van Houwelingen so n'otu ndị meriri n'asọmpi ịnyịnya ígwè na-agba n'otu oge n'asọmpi mbaụwa nke afọ 1978.
1978 UCI Road World Championships.