Roncalli Catholic High School is a private, Roman Catholic high school in Omaha, Nebraska, United States.

It is located in the Roman Catholic Archdiocese of Omaha.

The school was formed by a merger of all-girls Notre Dame Academy with all-boys Rummel High School in 1974.

[3] It is named after Pope John XXIII, Angelo Giuseppe Roncalli.

Roncalli Catholic is a member of the Nebraska School Activities Association.