Dan Popp is a 39 year old American suspected criminal from Milwaukee, Wisconsin.

On March 6, 2016 Popp murdered 3 of his neighbors in Milwaukee, Wisconsin. Popp fatally shot his neighbor and fired at the man's son after they declined a beer before killing two other tenants of his apartment complex. Popp is charged with three counts of first-degree intentional homicide in the deaths of 40-year-old Jesus Manso-Perez, 36-year-old Phia Vue and 32-year-old Mai Vue, who were fatally shot Sunday. Popp is also charged with attempted first-degree intentional homicide.