The Wallenquist Organization is a criminal organization in the fictional universe of Frank Miller's Sin City. It is led by Herr Wallenquist, a German-American (though the name is actually Swedish) mobster shrouded in mystery. The organization has a broad base of criminal enterprise to its name, including drug smuggling, contract killing, racketeering, organ harvesting and human trafficking for the purpose of illegal adoption and slavery, as well as having many city officials on their payroll at one time or the other. They employ scores of mercenaries, including former IRA members, and implied Neo-Nazis.