Franz Paul Nettelbeck (23 April 1889 – 14 June 1963) was a German sportsman who excelled as a long-distance runner and cyclist.

In addition to athletics, he played ice hockey, skated, swam and cycled.

[3] Nettelbeck failed to win a medal at the 1908 Olympics, where he was eliminated after finishing fifth in his heat of the 5 miles and did not start in the marathon, in which he had also been due to compete.

Afterwards, Nettelbeck continued to compete in athletics but he later became a professional cyclist, and set several unofficial world records.

His autobiography, Vom Marathonlaüfer zum Rad-Rennfahrer, was published in 1925.