List of Catholic churches in Port Harcourt
The following is a list of Roman Catholic churches in Port Harcourt, Nigeria.
The Diocese of Port Harcourt covers the city of Port Harcourt.
Diocese of Port Harcourt
| Congregation | 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 |
| Corpus Christi Cathedral | No. 1 Kaduna Street, D-line |
| Holy Family | Woji |
| Holy Spirit | Mgbuoba, Ozuoba |
| Holy Trinity Catholic Church | Tere-Ama |
| Immaculate Heart | Diobu |
| Mater Misericordiae | Rumuomasi |
| 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. Margaret's | Creek 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 |
| Church of Divine Mercy | Eneka |
| St. James | Eneka |
| Mater Eclessia | Eneka |