This is a list of homicides committed by firearms in the state of California which have a Wikipedia article for the killing, the killer, or a related subject.
| width=150 | Article ! | Location | Date | Number killed | Number injured | Description |
|---|---|---|---|---|---|---|
| Orcutt (nearby) | 1965-04-25 | 4 | 10 | Teenager shot at cars on highway. | ||
| 1973-04-22 | 7 | 9 | Shooting spree | |||
| 1976-07-12 | 7 | 2 | Workplace violence | |||
| 1979-01-29 | 2 | 9 | School shooting | |||
| 1984-02-24 | 3 | 12 | School shooting | |||
| San Ysidro McDonald's massacre | 1984-07-18 | 23 | 19 | Deadliest US mass shooting at time | ||
| 1988-02-16 | 7 | 4 | Stalking/workplace violence | |||
| 1989-01-17 | 6 | 32 | School shooting | |||
| 1989-04-14 | 7 | Domestic violence | ||||
| Dana Ewell | Fresno | 1992-04-19 | 3 | Murder for hire for financial gain | ||
| 1992-05-01 | 4 | 10 | School shooting | |||
| Paso Robles/Morro Bay | 1992-11-07 | 7 | 2 | Shooting spree | ||
| San Francisco | 1993-07-01 | 9 | 6 | Attack on a law firm. | ||
| 1997-2-28 | 2 | 20 | Bank robbery and subsequent shootout | |||
| 1999-08-10 | 1 | 5 | anti-Semitic terrorist attack by Aryan Nations member | |||
| 2001-01-10 | 3 | 3 | Shooting spree | |||
| 2001-03-05 | 2 | 13 | School shooting | |||
| 2004-03-12 | 9 | Domestic violence; familicide | ||||
| 2006-01-30 | 8 | Workplace violence | ||||
| 2008-12-24 | 10 | Domestic violence | ||||
| 2011-10-12 | 8 | 1 | Mass shooting at a hair salon | |||
| 2011-12-16 | 3 | 2 | Workplace shooting, power company | |||
| 2012-04-02 | 7 | 2 | School shooting | |||
| 2012-07-21 | 2 | 6 | Protests after police officer killings | |||
| 2012-11-6 | 3 | 2 | ||||
| Los Angeles (and nearby) | 2013-02-3 to 2013-02-12 | 5 | Attack on the police | |||
| 2013-06-07 | 6 | 2 | School shooting | |||
| 2013-06-07 | 3 | 4 | Gang-related fight and shooting | |||
| 2014-05-23 | 6 | 14 | Shooting spree | |||
| 2014-10-24 | 2 | 2 | Shooting of Sacramento County sheriff's deputies | |||
| 2015-02-02 | 1 | Rapper shot | ||||
| San Bernardino | 2015-12-02 | 16 | 24 | Islamic Terrorist attack at the workplace. | ||
| Fresno | 2017-04-18 | 4 | African-American man targeted White victims at several locations. | |||
| 2017-11-13 to 2017-11-14 | 6 | 18 | Shooting spree across 8 locations | |||
| 2018-11-07 | 13 | 16 | Mass shooting at a restaurant | |||
| 2018-12-16 | 3 | 7 | Shooting spree in several locations | |||
| 2019-04-27 | 1 | 3 | Antisemitic terrorist attack inspired by the Pittsburgh synagogue shooting and the Christchurch mosque shootings. | |||
| 2019-07-28 | 4 | 12 | Mass shooting | |||
| 2019-10-31 | 5 | 4 | Mass shooting that occurred during a house party. | |||
| 2019-11-14 | 2 | 5 | School shooting | |||
| 2019-11-17 | 4 | 6 | A group of family and friends were gathered in a backyard Sunday to watch a football game when two gunmen sneaked into the yard and began shooting. | |||
| Hollywood Hills, Los Angeles | 2020-02-19 | 1 | Rapper shot; arrests made | |||
| 2020-05-30 | 2 | 3 | Attacks on law enforcement during the George Floyd protests. | |||
| 2020-09-07 | 7 | Unsolved case, investigated by police if related to a marijuana grow | ||||
| 2021-05-26 | 10 | Mass shooting; workplace violence | ||||
| 2022-04-03 | 6 | 12 | Mass shooting; Gang War | |||
| 2022-05-15 | 1 | 5 | Hate crime at a church. | |||
| 2022-09-28 | 1 | 5 | Mass shooting, unsolved and alleged by police to be gang-related. | |||
| 2023-01-16 | 2 | 2 | Two juveniles held. | |||
| 2023-01-16 | 6 | 0 | Unsolved alleged cartel massacre at a house. | |||
| 2023-01-21 | 12 | 9 | Mass shooting during Lunar New Year celebrations | |||
| 2023-01-23 | 7 | 1 | Workplace violence at two farms. | |||
| 2023 Trabuco Canyon shooting | Trabuco Canyon, California | 2023-08-23 | 4 | 6 | Mass shooting at bar, gunman targeted his ex-wife |