The Roman Catholic Diocese of Honolulu comprises eight vicariates forane consisting of its member parishes.
The parishes of Vicariate I comprise the West Honolulu Vicariate. The parishes of Holy Family and Saint Philomena are clustered, sharing one pastor; likewise so are the parishes of Saint Stephen and Blessed Sacrament.
The parishes of Vicariate II comprise the East Honolulu Vicariate. The Mānoa-Punahou Catholic Community, a clustered parish consisting of Sacred Heart Catholic Church on Wilder Avenue and Saint Pius X Catholic Church in Mānoa Valley was canonically erected by the Bishop of Honolulu.
The parishes of Vicariate III comprise the Windward Oʻahu Vicariate located in the districts of Koʻolaupoko and Koʻolauloa.
The parishes of Vicariate IV comprise the Leeward Oʻahu Vicariate.
The parishes of Vicariate V comprise the Maui Vicariate.
The parishes of Vicariate VI comprise the West Hawaiʻi Vicariate.
The parishes of Vicariate VII comprise the East Hawaiʻi Vicariate.
The parishes of Vicariate VIII comprise the Kauaʻi Vicariate.