The Marmonte League is a high-school sports league primarily made up of schools from Ventura County, California. The Marmonte League is part of the CIF Southern Section.
Presently, the league consists of the following ten high schools:
* Agoura High School
* Calabasas High School
* Moorpark High School
* Newbury Park High School
* Oaks Christian
* Royal High School
* Simi Valley High School
* St. Bonaventure
* Thousand Oaks High School
* Westlake High School
* Oaks Christian High School
* St. Bonaventure High School
