Ernst Ulrich Hans von Leyser () (known as Ernst von Leyser) was a German General der Infanterie during World War II who commanded various Army Corps and recipient of the Knight's Cross of the Iron Cross. The Knight's Cross was Nazi Germany's highest award for military gallantry and was awarded to recognise extreme battlefield bravery or successful military leadership. After the war, in 1947, von Leyser was tried for war crimes committed in the Balkans and sentenced to ten years of imprisonment during the Hostages Trial, but was pardoned and released in 1951.