Redondo Union High School (RUHS) is a public high school in Redondo Beach, California.

Redondo Union High School is a part of the Redondo Beach Unified School District. All residents of Redondo Beach are zoned to Redondo Union. In addition, residents of Hermosa Beach may choose to attend Redondo Union or Mira Costa High School of the Manhattan Beach Unified School District.^[2]

Since opening in 1905, Redondo Union High School has developed into the second largest high school campus in the State of California,^{[citation needed]} with an overall area of 56 acres (230,000 m²).

Redondo Union High School was organized in the summer of 1905. The first classes were held in two upstairs rooms of the Masonic Building in Redondo Beach. In December of that same year, a site known as Old Chautauqua Place was selected as the location for the school.

In 1939, the Science Building was dedicated. Residents of Manhattan Beach attended Redondo Union until 1950, when Mira Costa High School opened.^[3]

Redondo Union High School was a part of the South Bay Union High School District until 1993, when it dissolved.^[4]

In 2013 RUHS Boys' Basketball defeated College Park to win the Division II CIF State Championship.^[5]

In 2015 the Girls' Volleyball team won the CIF State Championship.^[6] The RUHS Marching Band & Guard won first place in CSBC in Division 4A for their show "Above and Beyond".^[7]

In 2016 Boys' Baseball again won the CIF title in Division III.^[8]

In 2022 both Boys and Girls Soccer won the CIF Southern Section Division 2 Championships on their home stadium on the same day. ^[9]

Redondo offers Advanced Placement classes in: English Language, English Literature, Biology, Chinese, Chemistry, Environmental Science, Physics 1, Physics 2, European History, United States History, Government and Politics: United States, Psychology, Calculus AB, Calculus BC, Statistics, Studio Art, French, Spanish Language, Computer Science A, Computer Science Principles, Art History, Macroeconomics, and Music Theory.

This article's list of alumni may not follow Wikipedia's verifiability policy. (June 2023)

• Jim Allison – AFL player – San Diego Chargers
• Dez Cadena – Singer for Black Flag
• Iris Cummings – Aviator and competition swimmer
• Keith Ellison – NFL – Buffalo Bills^[13]
• Kevin Ellison – University of Southern California Trojans^[14]
• Morgan Ensberg – MLB – New York Yankees^[15]
• Carla Esparza (née: O'Connell) – Professional mixed martial artist, inaugural UFC Strawweight Champion (2014)^[16]
• Lynette "Squeaky" Fromme – Member of the Manson family^[17][18]
• Nona Gaye – Recording artist and daughter of Marvin Gaye^[19]
• Lynn Hoyem – NFL – Dallas Cowboys and Philadelphia Eagles^[20]
• Jermar Jefferson – NFL player
• Charles Lindbergh Sr. – The world renowned pilot, the first to cross the Atlantic non stop in an aircraft, in 1927. (attended for one year, and transferred) ^[21]
• Traci Lords – Actress (dropped out at age 15)
• Demi Moore – Actress (transferred to Fairfax High School after freshman year)^[22]
• Ty Page – Professional skateboarder^[23]
• Donald Peterman – Academy Award-nominated cinematographer^[24]
• The Smothers Brothers – Comedians who hosted a prime time television series in the 1960s.
• Ted Stevens – Former United States Senator for Alaska
• Dijon Thompson – Former NBA player with the Phoenix Suns and Atlanta Hawks, currently playing for Hapoel Jerusalem of the Israeli Basketball Premier League.^[25]
• Byron McMackin – Drummer for Pennywise^[26]
• Sean Rosenthal – Olympic Beach Volleyball player
• Dominik Eberle – NFL Kicker
• Claire Wineland – activist, author and speaker