Roncalli Catholic High School is a private, Catholic high school in Omaha, Nebraska. It is located in the Archdiocese of Omaha.
The school was formed by a merger of all-girls Notre Dame Academy with all-boys Rummel High School in 1974. It is named after Pope John XXIII, Angelo Giuseppe Roncalli.
Roncalli Catholic is a member of the Nebraska School Activities Association. They have won the following NSAA State Championships: