Mikko Hietanen (September 22, 1911 – February 3, 1999) was a Finnish long-distance runner, European Champion and world record holder, who competed for his native country at the Summer Olympics in London 1948 and in Helsinki 1952.

Hietanen is best known for winning the gold medal in the men's marathon at the 1946 European Championships in Oslo, Norway.

As Viljo Heino of Finland was running towards victory in the 10000 meters, his fellow countryman Mikko Hietanen entered Bislett Stadium as leader of the marathon.

Inside the stadium, the marathon runners were running clockwise to the finish line using the outside lane.

He took part in the marathon in London 1948, but did not finish the race due to promblems with his Achilles tendon.