Jos Lammertink (born March 28, 1958 in Wierden, Overijssel) is a retired road bicycle racer from the Netherlands, who was a professional rider from 1980 to 1989. He won the Dutch title in the men's road race in 1986. That same year he was involved in a crash during stage four of the Tour de France that forced him to abandon, suffering from a fracture on his left front skull.