The Romanian Catholic Eparchy of Saint Basil the Great of Bucharest (Romanian Sfântul Vasile cel Mare de București) is an eparchy (equivalent to a diocese in the Latin Church) of the Romanian Greek Catholic Church which is an Eastern Catholic particular church of the Catholic Church that is in full communion with the Holy See.

Its uses the Byzantine Rite in the Romanian language in its liturgical services.

It is a suffragan diocese of the Major Archeparchy of Făgăraș and Alba Iulia.

The eparchy was erected on 29 May 2014 by Major Archbishop Lucian Cardinal Mureșan on territory split off from the Romanian Catholic Archdiocese of Făgăraş and Alba Iulia with the consent of the synod of the Romanian Catholic Church and the Holy See.

[2] The jurisdiction of the eparchy comprises all Greek Catholics of the Romanian Greek Catholic Church who reside in Bucharest and the historical regions of Dobruja, Muntenia and Oltenia.