Otto Falckenberg (5 October 1873 in Koblenz – 25 December 1947 in Munich) was a German theatre director, manager and writer.
In April 1901, he co-founded Die Elf Scharfrichter, the first political kabarett (a form of cabaret which developed in Germany from 1901).
In 1901 in Munich he was one of the founders of the first German political cabaret "Die Elf Scharfrichter" and he contributed to it until 1903 as performer, author and director.
He brought many actors to fame, among them Bertha Drews, Elisabeth Flickenschildt, Maria Nicklisch, Therese Giehse, Will Dohm and Heinz Rühmann.
In 1936 he staged the antisemitical "Rothschild siegt bei Waterloo" by Eberhard Wolfgang Möller.