Southridge High School (SRHS) is a public high school in Beaverton, Oregon, United States. The school's boundary serves southern Beaverton, and a small portion of Portland and Tigard.
Southridge opened in 1999 due to overcrowding at other high schools in the Beaverton SD. SRHS was constructed with the help of a $146 million bond approved in 1996. Southridge opened to grades 9–11 with an initial enrollment of 1,236. 12th grade was added the following year. Southridge's first principal was Sarah Boly.
The school offers International Baccalaureate programs and a large number of Advanced Placement courses.