Cathedral Saint Basil the Great, Greek Catholic cathedral in Bucharest, Romania.

Cathedral Saint Basil the Great is a Greek Catholic church at 50 Polonă Street, set 30 metres back from the street because the authorities required it to be built in the courtyard. Architect Nicolae Ghica-Budești modelled it on the Saint George Church in Baia, attributed to Stephen the Great. The building was consecrated in 1909.

This cathedral was built in 1909 under Archbishop Raymund Netzhammer's supervision and marked the first Greek Catholic church construction in Bucharest. It therefore became a significant milestone for this religious community establishing itself in the city.

The parish kept its Greek Catholic identity through the communist ban, and the church was returned on 28 December 2006 after 14 years of court cases. Its patronal feast is 1 January, the day of Basil of Caesarea. Among parishioners were the poet George Coșbuc and politicians Iuliu Maniu and Alexandru Vaida-Voevod.

The church stands 30 metres back from Polonă Street, in the courtyard, because the authorities made this a condition for allowing construction. Look for the entrance set back from the street rather than at the pavement. It is an active Greek Catholic cathedral, so visits are best timed outside services.

After being confiscated during communist times, this church went through a 14-year legal battle before being returned to the Greek Catholic community in 2006. This restoration represents a remarkable story of how the local community fought to reclaim what was taken from them.