Hartthijs de Vries (born 11 July 1996) is a Dutch cyclist, who currently rides for UCI ProTeam Unibet Tietema Rockets.

[4] In September 2017, he signed a two-year professional contact with Roompot–Nederlandse Loterij.

[5] However, before the season began he was forced to surrender his contract due to cardiac arrhythmias.

[6][7] He instead joined club team NWV Groningen, where he was able to make a comeback and secure a stagiaire spot on UCI WorldTeam LottoNL–Jumbo.

This biographical article related to a Dutch cycling person born in the 1990s is a stub.