Herman Casler (March 12, 1867 in Sandwich, Illinois – July 20, 1939 in Canastota, New York) an American inventor, was co-founder of the partnership called the K.M.C.D.
Syndicate, along with W.K-L.
Dickson, Elias Koopman, and Henry Marvin, which eventually was incorporated into the American Mutoscope Company in December 1895.