Pumpenmeister (mil. rank: Maat) Wilhelm Heidkamp (1883 – 1931) was a German sailor who fought in World War I. Heidkamp was born in Herkenrath and joined the German Navy as a machinist in 1902. He transferred to SMS Seydlitz in 1912. After the war Heidkamp took over his father's grocery store in Untereschbach. Heidkamp was married and had four children. The World War II German destroyer Z21 was named Wilhelm Heidkamp in his honour.