John A. Balcerzak (born April 15, 1957) is a former police officer from Milwaukee, Wisconsin who served as president of the Milwaukee Police Association (the police union for Milwaukee officers) from 2005 to 2009. Balcerzak first gained national attention in 1991, when he was fired for having handed over an injured child to serial killer Jeffrey Dahmer, despite bystanders' protests. He appealed his termination and was subsequently reinstated. Balcerzak retired from the Milwaukee Police Department in 2017.