List of law enforcement agencies in California

State agencies

• California Department of Justice
• *California Bureau of Investigation - Special Agents
• *California Bureau of Firearms - Special Agents
• *California Bureau of Forensic Services - Special Agents
• *California Bureau of Gambling Control - Special Agents
• *California Bureau of Medi-Cal Fraud & Elder Abuse - Special Agents
• California Highway Patrol
• California Department of Corrections and Rehabilitation
• *California Office of Correctional Safety - State Fugitive Apprehension Teams & Special Service Unit
• California Department of Alcoholic Beverage Control - Special Agents
• California Department of Fish and Wildlife - Game Wardens
• California State Parks Peace Officer
• California Department of Toxic Substances Control - Criminal Investigators
• California Department of Motor Vehicles Investigations Division - Investigator
• California Department of Insurance - Investigations Division
• California Franchise Tax Board - Investigations Bureau
• California Lottery Security and Law Enforcement Division
• California Department of Consumer Affairs - Division of Investigation
• California Department of Forestry and Fire Protection - Law Enforcement
• California Department of Health Care Services - Investigations Branch
• California Department of Public Health, Food and Drug Branch
• California Health and Human Services Agency
• *California Department of State Hospitals - Hospital Police Officers
• *Office of Law Enforcement Support
• *Office of Special Investigations
• *California Department of Developmental Services - Developmental Center Police Officers

  County agencies

• Alameda County
• *Alameda County Sheriff's Office
• *Alameda County Probation Department
• Alpine County Sheriff's Office
• Amador County Sheriff's Office
• Butte County Sheriff's Department
• Calaveras County Sheriff's Department
• Colusa County Sheriff's Office
• Contra Costa County Sheriff's Office
• Del Norte County Sheriff's Office
• El Dorado County Sheriff's Office
• Fresno County Sheriff's Department
• Glenn County Sheriff's Office
• Humboldt County Sheriff's Office
• Imperial County Sheriff's Office
• Inyo County Sheriff's Office
• Kern County
• *Kern County Sheriff's Department
• *Kern County Probation Department
• *
• Kings County Sheriff's Department
• Lake County Sheriff's Department
• Lassen County Sheriff's Office
• Los Angeles County
• *Los Angeles County Sheriff's Department
• *Los Angeles County Probation Department
• Madera County Sheriff's Department
• Marin County Sheriff's Office
• Mariposa County Sheriff's Department
• Medocino County Sheriff's Office
• Merced County Sheriff's Office
• Modoc County Sheriff's Office
• Mono County Sheriff's Department
• Monterey County Sheriff's Office
• Napa County Sheriff's Department
• Nevada County Sheriff's Office
• Orange County Sheriff's Department
• Placer County Sheriff's Office
• Plumas County Sheriff's Office
• Riverside County Sheriff's Department
• Sacramento County
• *Sacramento County Sheriff's Department
• *Sacramento County Park Rangers
• San Benito County, California
• *San Benito County Sheriff's Office
• **San Benito County Marshal's Office
• San Bernardino County
• *San Bernardino County Sheriff's Department
• *San Bernardino County Probation Department
• San Diego County
• *San Diego County Sheriff's Department
• *San Diego County Probation Department
• San Francisco Sheriff's Department
• San Joaquin County Sheriff's Department
• San Luis Obispo County Sheriff's Department
• San Mateo County Sheriff's Office
• Santa Barbara County Sheriff's Office
• Santa Clara County
• *Santa Clara County Sheriff's Office
• *Santa Clara County Park Ranger
• *Santa Clara County Department of Correction
• Santa Cruz County Sheriff's Office
• Shasta County Sheriff's Office
• Sierra County Sheriff's Office
• Siskiyou County Sheriff's Department
• Solano County Sheriff's Office
• Sonoma County Sheriff's Department
• *Sonoma County Park Rangers
• Stanislaus County Sheriff's Department
• Sutter County Sheriff's Department
• Tehama County Sheriff's Office
• Trinity County Sheriff's Department
• Tulare County Sheriff's Office
• Tuolumne County Sheriff's Office
• Ventura County Sheriff's Office
• Yolo County Sheriff's Department
• Yuba County Sheriff's Department

  Municipal agencies

• Adelanto Police Department
• Alameda Police Department
• Alhambra Police Department
• Anaheim Police Department
• Antioch Police Department
• Arcadia Police Department
• Arcata Police Department
• Arvin Police Department
• Atascadero Police Department
• Atherton Police Department
• Auburn Police Department
• Azusa Police Department
• Bakersfield Police Department
• Baldwin Park Police Department
• Banning Police Department
• Barstow Police Department
• Beaumont Police Department
• Bell Gardens Police Department
• Bell Police Department
• Belmont Police Department
• Benicia Police Department
• Berkeley Police Department
• Beverly Hills Police Department
• Bishop Police Department
• Blythe Police Department
• Brawley Police Department
• Brea Police Department
• Brentwood Police Department
• Buena Park Police Department
• Burbank Police Department
• Burlingame Police Department
• Calexico Police Department
• California City Police Department
• Calipatria Police Department
• Campbell Police Department
• Capitola Police Department
• Carlsbad Police Department
• Carmel-by-the-Sea Police Department
• Cathedral City Police Department
• Ceres Police Department
• Chico Police Department
• Chino Police Department
• Chula Vista Police Department
• Citrus Heights Police Department
• Claremont Police Department
• Clearlake Police Department
• Clayton Police Department
• Clovis Police Department
• Coachella Police Department
• Colton Police Department
• Concord Police Department
• Corcoran Police Department
• Corona Police Department
• Coronado Police Department
• Costa Mesa Police Department
• Cotati Police Department
• Covina Police Department
• Culver City Police Department
• Cypress Police Department
• Daly City Police Department
• Danville Police Department
• Davis Police Department
• Delano Police Department
• Del Rey Oaks Police Department
• Desert Hot Springs Police Department
• Dinuba Police Department
• Dixon Police Department
• Downey Police Department
• Dublin Police Department
• East Palo Alto Police Department
• El Cajon Police Department
• El Centro Police Department
• El Cerrito Police Department
• El Monte Police Department
• El Segundo Police Department
• Elk Grove Police Department
• Emeryville Police Department
• Escondido Police Department
• Eureka Police Department
• Exeter Police Department
• Fairfax Police Department
• Fairfield Police Department
• Farmersville Police Department
• Folsom Police Department
• Fontana Police Department
• Fortuna Police Department
• Foster City Police Department
• Fountain Valley Police Department
• Fresno Police Department
• Fremont Police Department
• Foster City Police Department
• Fullerton Police Department
• Galt Police Department
• Gardena Police Department
• Garden Grove Police Department
• Gilroy Police Department
• Glendale Police Department
• Glendora Police Department
• Grass Valley Police Department
• Greenfield Police Department
• Hanford Police Department
• Hawthorne Police Department
• Hayward Police Department
• Healdsburg Police Department
• Hemet Police Department
• Hercules Police Department
• Hillsborough Police Department
• Hillsdale Police Department
• Holtville Police Department
• Huntington Beach Police Department
• Huntington Park Police Department
• Huron Police Department
• Imperial Police Department
• Indio Police Department
• Inglewood Police Department
• Irvine Police Department
• Irwindale Police Department
• Kensington Police Department
• Kerman Police Department
• King City Police Department
• Kingsburg Police Department
• Laguna Beach Police Department
• Lakeport Police Department
• La Mesa Police Department
• La Palma Police Department
• La Quinta Police Department
• La Verne Police Department
• Lemoore Police Department
• Lindsay Public Safety Department
• Livermore Police Department
• Lodi Police Department
• Lompoc Police Department
• Long Beach Police Department
• Los Alamitos Police Department
• Los Altos Police Department
• City of Los Angeles
• *Los Angeles Police Department
• *
• Los Gatos Police Department
• Madera Police Department
• Mammoth Lakes Police Department
• Manhattan Beach Police Department
• Manteca Police Department
• Maricopa Police Department
• Marina Police Department
• Martinez Police Department
• Marysville Police Department
• Maywood-Cudahy Police Department
• McFarland Police Department
• Menlo Park Police Department
• Mendota Police Department
• Merced Police Department
• Milpitas Police Department
• Mill Valley Police Department
• Millbrae Police Department
• Modesto Police Department
• Monrovia Police Department
• Montclair Police Department
• Montebello Police Department
• Monterey Police Department
• Monterey Park Police Department
• Moraga Police Department
• Morgan Hill Police Department
• Morro Bay Police Department
• Mountain View Police Department
• Murrieta Police Department
• National City Police Department
• Napa Police Department
• Newark Police Department
• Newport Beach Police Department
• Novato Police Department
• City of Oakland
• *Oakland Police Department
• *Oakland Housing Authority Police Department
• Oakdale Police Department
• Oakley Police Department
• Oceanside Police Department
• Ontario Police Department
• Orange Police Department
• Orange Grove Police Department
• Orinda Police Department
• Oroville Police Department
• Oxnard Police Department
• Pacifica Police Department
• Pacific Grove Police Department
• Palm Springs Police Department
• Palo Alto Police Department
• Palos Verdes Estates Police Department
• Paradise Police Department
• Pasadena Police Department
• Paso Robles Police Department
• Pinole Police Department
• Pismo Beach Police Department
• Pittsburg Police Department
• Placentia Police Department
• Pleasant Hill Police Department
• Pleasanton Police Department
• Pomona Police Department
• Port Hueneme Police Department
• Redding Police Department
• Redlands Police Department
• Redondo Beach Police Department
• Redwood City Police Department
• Rialto Police Department
• Richmond Police Department
• Ridgecrest Police Department
• Rio Dell Police Department
• Rio Vista Police Department
• Ripon Police Department
• Riverside Police Department
• Rocklin Police Department
• Roseville Police Department
• Sacramento Police Department
• Salinas Police Department
• San Anselmo Police Department
• San Bernardino Police Department
• San Diego Police Department
• Sand City Police Department
• San Fernando Police Department
• City of San Francisco
• *San Francisco Police Department
• *San Francisco Patrol Special Police
• San Gabriel Police Department
• San Jose Police Department
• *San Jose Park Rangers
• San Leandro Police Department
• San Lorenzo Police Department
• San Luis Obispo Police Department
• San Marino Police Department
• San Mateo Police Department
• San Pablo Police Department
• San Rafael Police Department
• San Ramon Police Department
• Santa Ana Police Department
• Santa Barbara Police Department
• Santa Clara Police Department
• Santa Cruz Police Department
• Santa Maria Police Department
• Santa Monica Police Department
• Santa Paula Police Department
• Santa Rosa Police Department
• Sand City Police Department
• Sausalito Police Department
• Scotts Valley Police Department
• Seal Beach Police Department
• Seaside Police Department
• Sebastopol Police Department
• Selma Police Department
• Shafter Police Department
• Sierra Madre Police Department
• Signal Hill Police Department
• Simi Valley Police Department
• Sonora Police Department
• South Gate Police Department
• South Lake Tahoe Police Department
• South Pasadena Police Department
• South San Francisco Police Department
• Stockton Police Department
• Suisun City Police Department
• Sunnyvale Department of Public Safety
• Taft Police Department
• Tehachapi Police Department
• Tiburon Police Department
• Torrance Police Department
• Tracy Police Department
• Truckee Police Department
• Tulare Police Department
• Turlock Police Department
• Tustin Police Department
• Ukiah Police Department
• Union City Police Department
• Upland Police Department
• Vacaville Police Department
• Vallejo Police Department
• Ventura Police Department
• Vernon Police Department
• Visalia Police Department
• Walnut Creek Police Department
• Watsonville Police Department
• West Covina Police Department
• West Sacramento Police Department
• Westminster Police Department
• Westmoreland Police Department
• Whittier Police Department
• Willits Police Department
• Winters Police Department
• Woodlake Police Department
• Woodland Police Department
• Weed Police Department
• Yuba City Police Department
• Yreka Police Department

  College and University agencies

• Allan Hancock Community College Police Department
• Antelope Valley College District Police
• Azusa Pacific University Campus Safety
• California State University police departments
• Cerritos Community College Police Department
• Chaffey College Police Department
• Chapman University Department of Public Safety
• Coastline Community College District Police Department
• Coastline Community College Public Safety
• College of the Sequoias District Police Department
• Contra Costa Community College District Police Services
• Crafton Hills Community College Police Services
• Cuesta College Police Department
• El Camino College Police Department
• Fontana Unified School District Police Department
• Foothill-De Anza College District Police Department
• Goldenwest College Public Safety
• Hartnell College Campus Safety Department
• Irvine Valley College Police Department
• Los Rios Community College Police Department
• Merced Community College Police Department
• MiraCosta Community College Police Department
• Notre Dame de Namur University Department of Public Safety
• Napa Valley College Police Department
• Orange Coast Community College Campus Public Safety
• Palomar Community College Police Department
• Pasadena Area Community College District Police Department
• Pepperdine University Department of Public Safety
• Riverside Community College District Police
• Saddleback College Police Department
• Saint Mary's College of California Department of Public Safety
• San Bernardino Community College District Police Department
• San Diego Community College Police Department
• San Francisco Community College Police Department
• San Joaquin Delta College District Police Department
• San Jose/Evergreen College District Police Department
• San Mateo Community College District Department of Public Safety
• Santa Rosa Junior College District Police Department
• Santa Monica College Police Department
• Sasta College Police Department
• Solano Community College Police Department
• South Orange County Community College District Department of Campus Safety
• Southwestern Community College Police Department
• Stanford Department of Public Safety
• State Center Community College District Police Department
• University of California Police Department
• University of the Pacific Police Department
• University of San Diego Department of Public Safety
• University of San Francisco Department of Public Safety
• University of Southern California Department of Public Safety
• Ventura County Community College Police Department
• Victor Valley College Police Department
• West Valley-Mission Community College District Police
• Yuba College Police Department

  K-12 School Agencies

• Apple Valley Unified School District Police Department
• Baldwin Park Unified School District Police Department
• Clovis Unified School District Police Department
• Compton Unified School District Police Department
• Elk Grove School District Police Department
• Fontana School District Police Department
• Glendale College District Police Department
• Hesperia School District Police Department
• Huntington Beach Union High School District Police Department
• Inglewood Unified School District Police Department
• Kern High School District Police Department
• Los Angeles School Police Department
• Long Beach Unified School District School Safety Department
• Montebello Unified School District Police Department
• Norwalk-La Mirada Unified School District School Safety Department
• Oakland Unified School District Police Department
• San Bernardino City Unified School District Police Department
• San Diego City Schools Police Department
• Santa Ana Unified School District Police Department
• Stockton Unified School District Police Department
• Twin Rivers Police Department
• Victor Valley Union High School District Police Department
• West Contra Costa Unified School District Police Department

  Special District agencies

• Bay Area Rapid Transit Police Department
• Bear Valley Police Department
• Bethel Island Municipal Improvement District
• Broadmoor Police Protection District
• Burbank-Glendale-Pasadena Airport Authority Police
• Compton Municipal Law Enforcement
• Capistrano Bay Police Department
• Central Marin Police Authority
• California Exposition & State Fair Police
• East Bay Regional Park District Police Department
• Exposition Park Department of Public Safety
• Kensington Police Protection and Community Services District
• Kern County Airport Police
• Lake Shastina Police Department
• Long Beach Harbor Patrol
• Long Beach Park Rangers
• Los Angeles World Airports Police Division
• Los Angeles Department of Recreation and Parks, Park Ranger Division
• Port of Los Angeles Police Division
• Los Angeles Society for the Prevention of Cruelty to Animals Law Enforcement Division
• Midpeninsula Regional Open Space District Ranger Division
• Montebello Park Rangers
• Monterey County Park Rangers
• Monterey Peninsula Airport Police
• Metropolitan Transit System Police Department
• Napa Valley Railroad Police Department
• Port of Stockton Police
• Sacramento Regional Transit Police
• San Diego Harbor Police
• San Diego Humane Society and SPCA Law Enforcement / Investigations Division
• San Francisco Park Patrol
• Santa Ana Park Rangers
• Santa Cruz Harbor Patrol
• Stallion Springs Police
• Town of Discovery Bay Community Services District

  Federal law enforcement agencies in California

• United States Park Police
• National Park Service Ranger
• United States Forest Service
• United States Mint Police
• Federal Bureau of Prisons
• Federal Protective Service
• Federal Reserve Police
• United States Fish and Wildlife Service
• Bureau of Indian Affairs Police
• Office of the United States Marshal for the Northern District of California
• Office of the United States Marshal for the Eastern District of California
• Office of the United States Marshal for the Central District of California
• Office of the United States Marshal for the Southern District of California
• United States Coast Guard
• United States Secret Service
• United States Customs and Border Protection
• United States Immigration and Customs Enforcement
• United States Naval Criminal Investigative Service
• United States Department of Veterans Affairs Police
• United States Army Military Police Corps
• United States Air Force Security Forces
• Commander, Navy Region Southwest Police
• United States Postal Service
• Federal Bureau of Investigation
• * Federal Bureau of Investigation Police
• Department of Defense Police
• *Defense Logistics Agency Police
• Federal law enforcement in the United States

  Defunct agencies

• California State Police
• California State Rangers
• Alviso Police Department merged into San Jose Police Department
• Avalon Police Department Disbanded - services now provided by the Los Angeles Sheriff's Department
• Blue Lake Police Department - merged with Humboldt County Sheriff's Department
• Compton Police Department
• Dorris Police Department Disbanded - Services contracted with Siskiyou County Sheriff's Office
• Dunsmuir Police Department Disbanded - Services contracted with Siskiyou County Sheriff's Office
• Ft. Jones Police Department Disbanded - Services provided by Siskiyou County Sheriff's Office
• Grossmont-Cuyamaca Community College Police Department - Disbanded - Services provided by San Diego County Sheriff's Department
• Half Moon Bay Police Department Disbanded - Services contracted with San Mateo County Sheriff's Office
• Holtville Police Department Disbanded - Merged into Imperial County Sheriffs' Office
• Hoopa Valley Tribal Police Department Disbanded - Merged into Humboldt County Sheriff's Office
• Housing Authority City of Los Angeles Police Department
• Imperial Beach Police Department Disbanded - Merged into San Diego County Sheriff's Department 1982
• Isleton Police Department
• Los Angeles General Services Police now the Los Angeles Police Department Security Services Division
• Los Angeles Community College District Police Department merged into LASD
• Los Angeles County Office of Public Safety
• Maricopa Police Department Disbanded - Merged into Kern County Sheriff's Office
• Maywood-Cudahy Police Department
• Millbrae Police Department Disbanded - Services contracted with San Mateo County Sheriff's Office
• Montague Police Department Disbanded - Services provided by Siskiyou County Sheriff's Office
• Santa Clara County Transit Police
• San Anselmo Police Department
• San Carlos Police Department Disbanded - Services contracted with San Mateo County Sheriff's Office
• San Juan Bautista Police Department
• San Jose Unified School District Police
• Southern California Rapid Transit District Police Department
• Stanton Police Department Disbanded - Merged into Orange County Sheriff's Department in February, 1988
• Trinidad Police Department
• Twin Cities Police Authority now known as Central Marin Police Authority
• Willows Police Department disbanded as of 7/1/17. Services provided by Glenn County Sheriff's Office