This is the list of cathedrals in Romania sorted by denomination.

Eastern Orthodox

Romanian Orthodox

Cathedrals of the Romanian Orthodox Church:

• Coronation Cathedral in Alba Iulia
• Cathedral of Saint Alexander [ro] in Alexandria
• Cathedral of the Nativity of Saint John the Baptist [ro] in Arad
• Holy Trinity Cathedral [ro] in Baia Mare (under construction)
• Patriarchal Cathedral of Saints Constantine and Helen in Bucharest
• Romanian People's Salvation Cathedral in Bucharest (under construction)
• Ascension of the Lord Cathedral in Bacău
• Dormition of the Theotokos Cathedral [ro] in Buzău
• Cathedral of Saint George in Caransebeș
• Dormition of the Theotokos Metropolitan Cathedral in Cluj-Napoca
• Cathedral of Saints Peter and Paul in Constanța
• Metropolitan Cathedral of Saint Demetrius in Craiova
• Curtea de Argeș Cathedral
• Cathedral of Saint Nicholas in Curtea de Argeș
• Nativity of the Theotokos Cathedral in Drobeta-Turnu Severin
• Resurrection of the Lord Cathedral in Fălticeni (under construction)
• Cathedral of Saint Nicholas [ro] in Galați
• Dormition of the Theotokos Cathedral in Giurgiu
• Hunedoara Cathedral in Hunedoara
• Cathedral of Saints Peter and Paul [ro] in Huși
• Metropolitan Cathedral in Iași
• Moon Church in Oradea
• Cathedral of Saint George in Pitești
• Cathedral of Saint Nicholas in Râmnicu Vâlcea
• Cathedral of the Holy Voievodes [ro] in Roman
• Cathedral of Saint George in Sfântu Gheorghe
• Metropolitan Holy Trinity Cathedral in Sibiu
• Ascension of the Lord Cathedral in Slobozia
• Cathedral of Saint George in Suceava
• Cathedral of the Nativity in Suceava
• Holy Trinity Cathedral in Târgoviște
• Cathedral of Saint George in Tecuci
• Metropolitan Cathedral of the Three Holy Hierarchs in Timișoara
• Cathedral of Saint Nicholas in Tulcea
• Saint Paraschiva Cathedral in Zalău

Serbian Orthodox

Cathedrals of the Serbian Orthodox Church:

• Cathedral of the Ascension in Timișoara^[1]

Lutheran

Lutheran cathedrals in Romania:

• Biserica Neagră in Brașov
• Sibiu Lutheran Cathedral in Sibiu

Calvinist

Cathedrals of the Reformed Church in Romania:

• Reformed Church in Cluj
• Two-towered Reformed Church in Oradea^[2]

Catholic

Latin Church

Catholic cathedrals of the Latin Church:^[3]

• Saint Michael Cathedral in Alba Iulia
• Saint Joseph Cathedral in Bucharest
• Our Lady Queen of Iași Cathedral in Iași
• Saint Mary Cathedral Basilica in Oradea
• Ascension Cathedral in Satu Mare
• Saint George Cathedral in Timișoara

Romanian Greek Catholic Church

Cathedrals of the Romanian Greek Catholic Church:^[3]

• Holy Trinity Cathedral in Blaj
• Transfiguration Cathedral in Cluj-Napoca
• Descent of the Holy Spirit Cathedral in Lugoj
• Assumption of Mary Cathedral in Baia Mare
• Saint Nicholas Cathedral in Oradea
• Saint Basil the Great Cathedral in Bucharest

Armenian Catholic

Cathedral of the Armenian Catholic Church:^[3]

• Holy Trinity Cathedral in Gherla