This is a list of notable homicides in California. This list includes notable homicides committed in the U.S. state of California that have a Wikipedia article on the killing, the killer, or the victim. It is divided into four subject areas as follows: 1. * Multiple homicides – homicides having multiple victims, including incidents involving spree killers, acts of terrorism, two mass homicides involving criminal acts causing airline crashes, and a mass suicide directed by a cult leader. The article includes sub-lists for homicides involving school shootings, familicides, and police shootouts. 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, including homicides involving celebrities as victims or perpetrators 4. * Bias homicides – includes attacks directed against Native Americans (a more complete list of those incidents is set forth in the California genocide article), Asian immigrants, members of a religious group, and individuals based on sexual orientation (en)