List of homicides in Wisconsin

This is a list of homicides in Wisconsin. This list includes notable homicides committed in the U.S. state of Wisconsin that have a Wikipedia article on the killing, the killer, or the victim. It is divided into three subject areas as follows:
 * 1) Multiple homicides – homicides having multiple victims.
 * 2) Serial killers – persons who murder three or more persons with the incidents taking place over more than a month and including a significant period of time between them
 * 3) Single homicides – notable homicides involving a single fatality

Among the works dealing with homicides in Wisconsin are Wisconsin Murders by August Derleth and ''Got Murder? The Shocking Story of Wisconsin's Notorious Killers'' by Martin Hintz.

Multiple homicides
Listed in chronological order
 * Nelsonville Triple Murders||Nelsonville||2009-04||6||Shane Kettner, 36, killed his girlfriend and her 2 children in their Nelsonville home. He was found by police with a surviving 6-month old child who along with parts of the home, had been dosed in gasoline. ||
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Serial killers
Listed in chronological order by date of earliest homicide