Henricus Everhardus Maria "Henk" Nieuwkamp (born 15 July 1942) is a retired Dutch cyclist who was active between 1959 and 1970. On track he competed at the 1968 Summer Olympics in the 4 km team putsuit. On the road he won the Ronde van Limburg in 1967, as well as individual stages of the Olympia's Tour (1968 and 1970) and Milk Race (1970).