Mercer High School

Mercer High School or Mercer County High School may refer to:


 * Mercer County High School (Illinois), in Aledo, Illinois &mdash; formed by the merger of Aledo High School and Westmer High School in 2009 and uses the team name "the Golden Eagles"
 * Mercer County Senior High School (Kentucky) in Harrodsburg, Kentucky &mdash; formed by the merger of Harrodsburg High School and Mercer County High School in 2006 and uses the team name "the Titans"
 * Mercer High School (Missouri), in Mercer, Mercer County, Missouri &mdash; operated by the North Mercer R-III School District, and uses the team name "the Cardinals"
 * Mercer County Junior-Senior High School (New Jersey), also known Mercer Junior Senior High School, in Hamilton, Mercer County, New Jersey &mdash; operated by Mercer County Special Services School District
 * Mercer County Performing Arts High School in Trenton, Mercer County, New Jersey &mdash; operated by the Mercer County Technical School District
 * Mercer High School (Tennessee) in Mercer, Madison County, Tennessee &mdash; merged to form South Side High School in Jackson, Tennessee in 1956
 * Mercer Area Middle-High School, also known as Mercer Area Junior/Senior High School, in Mercer, Mercer County, Pennsylvania &mdash; uses the team name "the Mustangs"
 * Mercer Island High School in Mercer Island, King County, Washington &mdash; uses the team name "the Islanders"
 * Mercer School (Wisconsin) in Mercer, Iron County, Wisconsin &mdash; includes Mercer Environmental Tourism Charter School and other high school, and uses the team name "the Tigers"