This is a list of the largest Eastern Orthodox church buildings in the world, based on area and capacity. Any Eastern Orthodox church building that has a capacity of 3,000 people or more, can be added to this page. Entries are included even if a premises otherwise meeting the criterion currently does not function as a church. For example, the Hagia Sophia in Turkey is included – it was originally built as a church but was later converted into a mosque. Sorting is done by volume (priority) and area. The church buildings are listed in alphabetical order according to country. The churches are from various jurisdictions of the Eastern Orthodox Church.
The Church of Saint Sava is a Serbian Orthodox church which sits on the Vračar plateau in Belgrade, Serbia. It was planned as the bishopric seat and main cathedral of the Serbian Orthodox Church. The church is dedicated to Saint Sava, the founder of the Serbian Orthodox Church and an important figure in medieval Serbia. It is built on the presumed location of St. Sava's grave. His coffin had been moved from Mileševa Monastery to Belgrade. The coffin was placed on a pyre and burnt in 1595 by Ottoman Grand Vizier Sinan Pasha. Bogdan Nestorović and Aleksandar Deroko were finally chosen to be the architects in 1932 after a second revised competition in 1926–27. This sudden decision instigated an important debate in interwar Yugoslavia which centered around the temple's size, design and symbolic national function. This was accompanied by a sizeable increase in the base area of the ambitiously conceived project. The new design departed from the competition guidelines issued in 1926, and was to replicate the dimensions and architecture of Hagia Sophia.
The People's Salvation Cathedral, also known as the National Cathedral, is an Eastern Orthodox cathedral under construction in Bucharest to serve as the patriarchal cathedral of the Romanian Orthodox Church. It is located in central Bucharest on Spirea's Hill, facing the same courtyard as the Palace of Parliament which is the heaviest building in the world, the cathedral having a one-tenth of its weight and about one-fifth of its volume. Situated behind the Palace of Parliament, this will make it 50 metres taller than the Palace, and will help to make the cathedral an iconic landmark in the city. The People's Salvation Cathedral to 135 metres (443 ft) height (ground-cross), holds a dominant position in Bucharest's cityscape, being visible from all approaches to the city.
The Orthodox Cathedral, also known as the Metropolitan Cathedral, is a Romanian Orthodox church in Timișoara. The cathedral is the seat of the Archbishopric of Timișoara and the Metropolis of Banat. It is dedicated to the Three Holy Hierarchs, Basil the Great, Gregory the Theologian and John Chrysostom.
Religious architecture in Novi Sad is very diverse. Majority of the believers in Novi Sad are from Serbian Orthodox Church, while others are from Roman Catholic Church, many Protestant churches, and Jewish community. Stari Grad is the place with the majority of churches and temples, and they were all built in the 18th and 19th century.
The Cathedral Church of the Holy Great-Martyr George is the seat of the Serbian Orthodox Eparchy of Bačka, located in Novi Sad, northern Serbia. The present-day church was completed in 1905, on the ruins of a church built in 1734 and destroyed in 1849. It is located next to the Eparchy offices in the Bishop's Palace, in Nikola Pašić Street. It is commonly known as Saborna crkva among the city residents.
The Metropolitan Cathedral, Iași, located at 16 Ștefan cel Mare și Sfânt Boulevard, Iași, Romania, is the seat of the Romanian Orthodox Archbishop of Iași and Metropolitan of Moldavia and Bukovina, and the largest historic Orthodox church in Romania. It is dedicated to Saint Parascheva, to the Presentation of Jesus and to Saint George. Its form was inspired by the late Italian Renaissance style, with Baroque elements dominating the interior and exterior decorative features. The Metropolitan Cathedral is listed in the National Register of Historic Monuments.
The Dormition of the Theotokos Cathedral, Giurgiu, located at 12 București Street, Giurgiu, Romania, is the seat of the Romanian Orthodox Bishop of Giurgiu.
The Coronation Cathedral, dedicated to the Holy Trinity and the Holy Archangels Michael and Gabriel, is a Romanian Orthodox cathedral located at 16 Mihai Viteazul Street, Alba Iulia, Romania. Built soon after and in commemoration of the Union of Transylvania with Romania, it is the seat of the Romanian Orthodox Archdiocese of Alba Iulia.
Church of St. Nicholas in Vukovar is a Serbian Orthodox church in eastern Croatia. The church is one of the oldest baroque buildings of the Serb community north of the Sava River.
The Church of St. Nicholas or Karlovac Cathedral, is a Serbian Orthodox church located in Karlovac, in central Croatia. The original church was finished in 1787, and was dedicated to Saint Nicholas. In 2007, the church was completely renovated.
Orthodox churches in Rostov-on-Don were built during the 17th–20th centuries; they played a role in shaping of the architectural appearance of Rostov-on-Don. They created the high-altitude dominants.
The Holy Trinity Cathedral is the seat of Eparchy of Niš. After the Church of St. Sava and the Church of St. Mark in Belgrade, the Cathedral Church in Niš is the largest in Serbia.
The Saint Nicholas Serbian Orthodox Cathedral is a Serbian Orthodox cathedral located at 149 Nash Road South, Hamilton, Ontario, Canada. It is dedicated to Saint Nicholas.
The Church of the Nativity of the Theotokos is an Orthodox church in the Iosefin district of Timișoara.
The Ascension Cathedral, commonly known as the Serbian Orthodox Cathedral, is the cathedral of the Serbian Orthodox Eparchy of Timișoara. Located in the Union Square of Cetate district, the building is one of the three Serbian Orthodox churches in the city together with the St. George Church in Fabric district and the St. Nicholas Church in the Avram Iancu Square of Mehala district.
The Church of the Transfiguration of the Lord in Mohovo is a Serbian Orthodox church in eastern Croatia. The church was constructed in between 1836 and 1839 with the iconostasis from 1857 built by Bogdan Đukić from Tovarnik, the same artist who built the iconostasis in Serbian Orthodox church in Petrovci. After the first general restoration in 1936 the new general restoration of the building was initiated in 2017.
The Church of the Transfiguration is one of the oldest Orthodox churches in Yekaterinburg, Russia. Construction work on the church took place from 1808 to 1830. During Soviet times, it was devastated and converted into a rubber goods factory. It was reclaimed by the faithful in 1995.