Ernst Ritter Streer von Streeruwitz (Mies, Bohemen 23 september 1874 – Wenen 23 oktober 1952), was een Oostenrijks politicus, industrialist en militair. ###>Ernst Streeruwitz (until 1919 Ernst "Ritter" Streer von Streeruwitz; 23 September 1874 - 19 October 1952, Vienna) was an Austrian officer, businessman, and politician of the Christian Social Party.