| Southwest High School | |
| Motto: | "Once a Raider, Always a Raider!" |
| City: | San Diego |
| State: | California |
| Country: | USA |
| Type: | Senior High School |
| Established: | 1975 |
| Principal: | Easter Finley[1] |
| Grades: | 9-12 |
| Mascot: | Raider |
| Newspaper: | Raider's Digest |
| Yearbook: | The Scimitar |
| Website: | http://soh.sweetwaterschools.org/ |
| Ratio: | 22.38 |
| Faculty: | 72.61 |
| Enrollment: | 1,652 (2021–22)[2] |
| Address: | 1685 Hollister Street |
| Colors: | Cardinal red and gold |
| Free Label 2: | ASB President |
| Free 2: | Camila Murguía |
Southwest [Senior] High School (SOH), in San Diego, California, United States, is a high school established in 1975. It was built on the site of a small railroad yard owned by the Southern Pacific Railroad along the original San Diego-Tijuana line. It existed until the mid-1930s when the tracks were moved east to the present-day Trolley tracks. Part of the Sweetwater Union High School District, it serves all socioeconomic communities of San Diego (specifically the Nestor community), as well as some students living in Chula Vista, Imperial Beach and San Ysidro. The school serves approximately 1,750 students.
The school has shown remarkable achievements in academic competitions such as Academic Decathlon, in which they held 6 consecutive county titles from 2003–2008 and received 3rd place in the 2009 and 2010 competitions. Along with these six consecutive county titles, Southwest High School is the first school in San Diego County to have achieved five and later six consecutive county titles. The Varsity Academic League won eight varsity Metro [District] championship titles in 1999, 2001, 2003–2007, and 2009. The Varsity won their division nine times in 1999, 2001, and 2003–2010. The varsity team in 2005 concluded their season by winning the County Academic League title beating La Jolla High School 124–53 making it the highest score in San Diego County Academic League championship history. For their accomplishments in League and Decathlon the San Diego County School Board declared in 2005 that June 17 would be known as Southwest High Academics Day. The JV Academic League held 8 consecutive Metro championship titles from 2001–2008 and have won their division for 10 years in a row from 2001-2010 (also an 11th win back in 1999).
The Southwest Raiders sports teams represent the Southwest Senior High School in high school sports programs.