Fedor Iwan den Hertog (20 April 1946 – 12 February 2011) was a Dutch racing cyclist.

[1] He won the Olympic 100 km team time trial in 1968 with Joop Zoetemelk, René Pijnen and Jan Krekels.

His most outstanding performance was the Rheinland-Pfalz tour in Germany in 1969, when he won nine of 11 stages and overall, 36 minutes ahead of the field.

Den Hertog was considered the best amateur of his time, and many professional teams wanted him, but he declined out of fear to lose his freedom.

He rode three times for the Dutch team, Frisol, coming 27th, 18th and then not finishing, although in 1977 he won the stage to Rouen.