This is a list of high schools in Orange County, California. It includes public and private schools and is arranged by school district (public schools) or affiliation (private schools).

• Anaheim High School, Anaheim
• Cypress High School, Cypress
• John F. Kennedy High School, La Palma
• Katella High School, Anaheim
• Loara High School, Anaheim
• Magnolia High School, Anaheim
• Oxford Academy, Cypress
• Savanna High School, Anaheim
• Western High School, Anaheim

• Brea Olinda High School, Brea

• Aliso Niguel High School, Aliso Viejo
• Capistrano Valley High School, Mission Viejo
• Dana Hills High School, Dana Point
• San Clemente High School, San Clemente
• San Juan Hills High School, San Juan Capistrano
• Tesoro High School, Rancho Santa Margarita

• Buena Park High School, Buena Park
• Fullerton Union High School, Fullerton
• La Habra High School, La Habra
• Sonora High School, La Habra
• Sunny Hills High School, Fullerton
• Troy High School, Fullerton

• Bolsa Grande High School, Garden Grove
• Garden Grove High School, Garden Grove
• La Quinta High School, Westminster
• Los Amigos High School, Fountain Valley
• Pacifica High School, Garden Grove
• Rancho Alamitos High School, Garden Grove
• Santiago High School, Garden Grove

• Edison High School, Huntington Beach
• Fountain Valley High School, Fountain Valley
• Huntington Beach High School, Huntington Beach
• Marina High School, Huntington Beach
• Ocean View High School, Huntington Beach
• Westminster High School, Westminster

• Irvine High School, Irvine
• Northwood High School, Irvine
• Portola High School, Irvine
• University High School, Irvine
• Woodbridge High School, Irvine

• Laguna Beach High School, Laguna Beach

• Los Alamitos High School, Los Alamitos

• Corona del Mar High School, Newport Beach
• Costa Mesa High School, Costa Mesa
• Estancia High School, Costa Mesa
• Newport Harbor High School, Newport Beach

• Canyon High School, Anaheim
• El Modena High School, Orange
• Orange High School, Orange
• Villa Park High School, Villa Park

• El Dorado High School, Placentia
• Esperanza High School, Anaheim
• Valencia High School, Placentia
• Yorba Linda High School, Yorba Linda

• El Toro High School, Lake Forest
• Laguna Hills High School, Laguna Hills
• Mission Viejo High School, Mission Viejo
• Trabuco Hills High School, Mission Viejo

• Century High School, Santa Ana
• Godinez Fundamental High School, Santa Ana
• Saddleback High School, Santa Ana
• Santa Ana High School, Santa Ana
• Segerstrom Fundamental High School, Santa Ana
• Valley High School, Santa Ana
• Middle College High School, Santa Ana California

• Arnold O. Beckman High School, Irvine
• Foothill High School (Tustin), North Tustin
• Tustin High School, Tustin

• Albor Charter School, Santa Ana
• Back Bay High School, Costa Mesa
• Brea Canyon Alternative High School, Brea
• California Preparatory Academy, San Juan Capistrano
• Cesar Chavez High School, Santa Ana
• Coast High School, Huntington Beach
• Creekside High School, Irvine
• Early College High School, Costa Mesa
• El Camino High School, Placentia
• Gilbert High School, Anaheim
• Hillview High School (Orange County, California), North Tustin
• Junipero Serra High School, San Juan Capistrano
• La Entrada High School, Yorba Linda
• La Sierra High School, Fullerton
• La Vista High School, Fullerton
• Lorin Griset Academy, Santa Ana
• Marie L. Hare High School, Garden Grove
• Middle College High School, Santa Ana
• Monte Vista High School, Costa Mesa
• Orange County High School of the Arts, Santa Ana
• Polaris High School, Anaheim
• Richland Continuation High School, Orange
• San Joaquin High School, Irvine
• Silverado High School, Mission Viejo
• Valley Vista High School, Fountain Valley

• Mater Dei High School, Santa Ana
• Rosary Academy, Fullerton
• Santa Margarita Catholic High School, Rancho Santa Margarita

• Cornelia Connelly High School, Anaheim
• Padre Pio Academy, Garden Grove
• JSerra Catholic High School, San Juan Capistrano
• St. Michael's Preparatory School, Silverado
• Servite High School, Anaheim

• Orangewood Academy^[1]

• Brethren Christian Junior/Senior High School, Huntington Beach
• Calvary Chapel High School, Santa Ana
• Capistrano Valley Christian Schools, San Juan Capistrano
• Crystal Cathedral High School, Garden Grove
• Grace OC Academy, Anaheim
• Newport Christian School, Newport Beach
• Pacifica Christian High School, Newport Beach^{[note 1]}
• Saddleback Valley Christian School, San Juan Capistrano
• Spirit Christian Academy, Tustin
• Whittier Christian High School, La Habra

• St. Margaret's Episcopal School

• Crean Lutheran High School, Irvine
• Lutheran High School of Orange County, Orange

• Hebrew Academy OC
• Tarbut V' Torah Community Day School

• Orange Crescent School, Garden Grove

• Acaciawood Preparatory Academy, Anaheim
• Alton School, Cypress
• Eldorado-Emerson, Orange
• Fairmont Preparatory Academy, Anaheim
• Florence Crittenton School, Fullerton
• Fusion Academy & Learning Center, Huntington Beach
• Fusion Academy & Learning Center, Mission Viejo
• Halstrom High School, Mission Viejo
• Sage Hill School, Newport Beach
• Silverleaf Academy, Mission Viejo
• The Tesla Academy, Irvine
• Waldorf School of Orange County, Costa Mesa

• List of high schools in Los Angeles County, California
• List of high schools in San Diego County, California
• List of high schools in California
• List of school districts in Orange County, California
• List of closed secondary schools in California

• Guide to the Orange County School Yearbook Collection. Special Collections and Archives, The UC Irvine Libraries, Irvine, California.