Cathedral of Our Lady of Peace

The Cathedral of Our Lady of Peace — also known by its original French name Cathédrale de Notre Dame de la Paix, its Portuguese variant Catedral de Nossa Senhora da Paz and its Hawaiian derivative Malia o ka Malu Hale Pule Nui — is the Mother Church of the Diocese of Honolulu and houses the cathedra of the Bishop of Honolulu in Honolulu, Hawaiʻi. Another cathedra was installed in the Co-Cathedral of Saint Theresa of the Child Jesus, also serving the diocese.

The Cathedral was built during the Hawaiʻi's missionary era and served as the mother church of the Vicariate Apostolic of the Hawaiian Islands. It was dedicated by Msgr. Maigret on August 15, 1843 under the title of Our Lady of Peace or Malia O Ka Malu.

It holds the distinction of being the oldest cathedral in continuous use in the United States as well as the church in which Saint Damien of Molokaʻi was ordained to the presbyterate on May 21, 1864. For these reasons, the Cathedral of Our Lady of Peace was placed on the National Register of Historic Places in 1972. Though older, the Basilica of the National Shrine of the Assumption of the Blessed Virgin Mary in the Archdiocese of Baltimore was a co-cathedral throughout most of its history and the Saint Louis Cathedral in the Archdiocese of New Orleans was closed for a long period of time in its history.