Ernst Ulrich Hans von Leyser (German pronunciation: [ˈeʁnst ˈuːlʁiːx ˈxans fon ˈlaɪsa]) (18 November 1889 – 23 September 1962) was a German general in the Wehrmacht of Nazi Germany during World War II who commanded several army corps.

As part of the Army Group North, the division fought in northern Soviet Union after the launching of Operation Barbarossa.

Almost a year later, he was assigned to lead the XV Mountain Army Corps, which was fighting against Yugoslav partisans in Croatia.

Leyser was tried, as subordinate to General Lothar Rendulic, along with 12 other high-ranking German officers in the Hostages Trial, from 13 May 1947 to 19 February 1948.

[1] On 31 January 1951, John J. McCloy, the US High Commissioner in Germany, revised his sentence to time served.