Arnold von Winckler (Neisse, 17 February 1856 – Bad Freienwalde, 24 July 1945) was a Prussian military officer, and a general in World War I. He was the son of Lieutenant General Ewald Fedor von Winckler (1813–1895) and joined the Prussian army at the age of 17. By 1912 he commanded the 2nd Guards Infantry Division in Berlin. At the outbreak of World War I, he fought with his division on the Western Front as part of the Second Army and participated in the First Battle of the Marne. In early 1915, his division was moved to the Eastern Front, where it fought in the Gorlice–Tarnów Offensive.