The following is a list of Roman Catholic churches in Port Harcourt, Nigeria.
The Diocese of Port Harcourt covers the city of Port Harcourt.
| width=40% | Congregation | width=40% | Location |
|---|---|---|---|
| All Saints | Rumueme | ||
| Blessed Tansi | New Rumukrushi | ||
| Blessed Tansi | Woji | ||
| C.K.C Church | Mile 1, Diobu | ||
| Chapel of the Annunciation | University of Port Harcourt | ||
| Christ the King | Diobu | ||
| Church of Assumption | NTA Mgbuoba | ||
| Church of Divine Mercy | Eneka Road | ||
| Church of Nativity | Rumuewhara | ||
| Church of Transfiguration | Rumukalagbo, off Stadium Road | ||
| Church of the Visitation | Atali | ||
| No. 1 Kaduna Street, D-line | |||
| Holy Family | Woji | ||
| Holy Spirit | Mgbuoba, Ozuoba | ||
| Holy Trinity | Tere-Ama | ||
| Immaculate Heart | Diobu | ||
| Mater Misericordiae | Rumuomasi[1] | ||
| Our Lady of Fatima | Choba | ||
| Our Lady of the Holy Rosary Chaplaincy | CIWA | ||
| Our Lady of Lourdes | Creek road | ||
| Our Lady of Victory | Rumuodomaya | ||
| Our Lady Seat Of Wisdom | Rivers State University of Science and Technology | ||
| Queen of Apostles | Rumuepirikom | ||
| Sacred Heart | Mile 2, Diobu | ||
| St. Aloysius | Trans Amadi | ||
| St. Clement's | Ozuoba | ||
| Saint Dominic | Bane-Ogoni | ||
| St. Elizabeth's | Akiama Bonny | ||
| St. Francis | Rumuokwuta | ||
| St Gabriel's | Rumuosi | ||
| St. John | Iwofe | ||
| St. John Paul II | Eliozu | ||
| St. John's | Rumuokwurushi | ||
| St Joseph's | Borokiri | ||
| St. Jude's | Rumuokoro | ||
| St. Kizito | Eliogbolo | ||
| St. Mary's | Aggrey Road | ||
| St Michael | Diobu | ||
| St. Paul's | Alesa | ||
| St. Paul's | Diobu | ||
| Saint Peter | Ahoada | ||
| St. Peter | Trans Amadi | ||
| St Peter Claver | Rumuodara | ||
| St. Pius X | Iriebe | ||
| St. Raphael's | Bonny | ||
| St. Raphael's | Rukpokwu | ||
| St. Thomas | Trans Amadi | ||
| Saint Vincent De Paul | Uruala, Mile 2, Diobu | ||
| Saints Peter and Paul | Elelenwo | ||