Moritz Callmann Wahl (March 28, 1829 – October 15, 1887) was a German writer.
He studied Oriental languages at Leipzig under Julius Fürst and Heinrich Leberecht Fleischer.
Later he taught for a time at an English school, and later was a correspondent in a business house at Lyon, France.
He settled at Erfurt, Germany, where he founded a business academy.
Aside from his teaching activity he pursued scientific studies.