Catalina Foothills is an unincorporated community and census-designated place (CDP) located north of Tucson in Pima County, Arizona, United States. Situated in the southern foothills of the Santa Catalina Mountains, Catalina Foothills had a population of 50,796 at the 2010 census. Catalina Foothills is one of the most affluent communities in Arizona and in the U.S., with the 6th highest per capita income in Arizona, and the 14th highest per capita income in the U.S. of communities with a population of at least 50,000. The Catalina Foothills community includes some of Arizona's most expensive homes and land, and has the highest median property value. It also includes resorts, golf courses, and spas.

Catalina Foothills High School is a public high school in the suburban community of Catalina Foothills, just north of Tucson, Arizona. It is the only high school in the Catalina Foothills School District. Founded in 1992, the school has approximately 1,650 students in grades nine through twelve. The school mascot is the peregrine falcon, and the school colors are blue and silver. Based on the percentage of students passing or exceeding Arizona's Instrument to Measure Standards standardized test, Catalina Foothills is one of the top high schools in the state. Annually, Catalina Foothills averages over 10 National Merit Finalists.