Piet Bleeker (27 August 1928 – 31 January 2018) was a Dutch long-distance runner, specialised in running the marathon.

Piet Bleeker delivered his first impressive performance in 1955 when he finished second in the 25 km Dutch championship behind Janus van der Zande.

As is known, the NOC decided on 7 November 1956 to boycott the Melbourne Olympics in connection with the invasion of the Soviet Union in Hungary, and the subsequent bloody fight in the streets of Budapest.

A few weeks earlier he had set the Dutch record for the 10 English miles at 51.50.8 during a 20 km run in Gouda.

Although Bleeker's greatest strength on the longer distances was evident, he nevertheless managed to reach the podium several times at Dutch track championships.