Joseph Amberg (1892 – September 30, 1935) was a New York mobster who, with his brothers Hyman and Louis "Pretty" Amberg, was involved in labor racketeering and other criminal activities. During the 1920s and 1930s the brothers competed with rivals such as Jacob "Gurrah" Shapiro, Louis "Lepke" Buchalter, Abe "Kid Twist" Reles and the Shapiro Brothers. On September 30, 1935, Amberg was murdered alongside associate Morris Kessler. The pair were ambushed in a Brownsville, Brooklyn auto repair garage and, after being ordered to line up against the wall, were gunned down by members of Murder, Inc.