John Joseph Papalia (Italian: [papa'li?a]; March 18, 1924 – May 31, 1997), also known as Johnny Pops Papalia or "The Enforcer", was an Italian-Canadian Mafia figure based in Hamilton, Ontario, Canada.
He was boss of the Papalia crime family, one of three major crime families in Hamilton, the other two being the Musitano crime family and the Luppino crime family.
Papalia was born in Hamilton, to Italian immigrants.
At a young age, he was involved in petty crimes.
By the 1950s, he moved his way up to drug trafficking, and formed a powerful alliance with the Buffalo crime family.
Papalia also operated various gambling bars and vending machine businesses.
By the 1960s and 1970s, he played a role in the French Connection smuggling operation.
On May 31, 1997, Papalia was shot to death outside his vending machine business by Kenneth Murdock, a hit man hired by Angelo and Pat Musitano of the Musitano family.