Maine South High School is a public four-year high school located in Park Ridge, Illinois, a northwest suburb of Chicago, Illinois, in the United States. It is part of Maine Township High School District 207.

Park Ridge is a city in Cook County, Illinois, United States, and a suburb of Chicago. Per the 2020 census, the population was 39,656. It is located 15 miles (24 km) northwest of downtown Chicago. It is close to O'Hare International Airport, major expressways, and rail transportation. It is a part of the Chicago metropolitan area, bordering three official neighborhoods on Chicago's Far Northwest Side