Bishop Kenny High School (commonly referred to as Bishop Kenny or BKHS) is a private, college-preparatory, coeducational Catholic high school in Jacksonville, Florida. It is located in and administered by the Roman Catholic Diocese of St. Augustine. The founder Archbishop Joseph Patrick Hurley established the school in 1952, following the merger of three previous Catholic high schools in the Jacksonville area. Bishop Kenny High School was renamed in honor of William John Kenny, the third bishop of the Diocese of St. Augustine.

Bishop Kenny High School is fully accredited by the Southern Association of Colleges and Schools. Bishop Kenny holds membership in the National Catholic Education Association, the Florida Catholic Conference, The College Board, the National Association for College Admission Counseling, and the Florida High School Athletic Association.

Bishop Kenny's sports teams, commonly known by their "Crusaders" nickname, are sanctioned by the Florida High School Activities Association (FHSAA). In their 60-year history, the school's varsity sports teams have won thirty-seven state team championships.

Among Bishop Kenny's alumni are the computer scientist Philip Don Estridge, the federal administrator Jim Towey, musicians Billy Powell and Virgil Roger du Pont III, the MLB All-Star Jonathan Papelbon, MLB player Ben Gamel, television host and model Yoanna House, Jacksonville Mayor Donna Deegan, and head coach Pat McMahon.

In 1952 three area Catholic high schools were consolidated as Central Catholic High School under the direction of Archbishop John P. Hurley. In 1953 Central Catholic was re-dedicated and named for Bishop William John Kenny, the third bishop of the Roman Catholic Diocese of St. Augustine.

In 1989, Father Michael Houle was named President of Bishop Kenny. Over the last 20 years more than $20 million have been raised and invested to improve the school. In 2015 Father Michael Houle announced his retirement as President of Bishop Kenny, ending the tradition of Priests as Presidents.

Bishop Kenny High School is located on 55 acres of riverfront property and can be found in the historic Southbank neighborhood of Saint Nicholas. The back of the campus is adjacent to the Saint Johns River. The school is located within the heart of the Jacksonville Metropolitan Area, a growing metropolitan center with a population of more than 1.5 million people.

Prior to the school being established it was once the site of a Spanish fortress, and in more modern times the property served as a shipyard during World War I.