Emanuel "Mendy" Weiss (June 11, 1906 – March 4, 1944) was a New York organized crime figure who was an associate of the notorious Louis Buchalter and part of Buchalter's criminal organization known as Murder, Inc. during the 1930s and up to the time of his arrest in 1941. The Federal Bureau of Narcotics claimed that Weiss and his partner in crime Philip "Little Farvel" Cohen were heavily involved in narcotics trafficking.