Sümbül Efendi Camii

Koca Mustafa Pasha Mosque Koca Mustafa Paşa Camii
The mosque seen from northeast
Religion
Affiliation	Sunni Islam
Patron	Koca Mustafa Pasha
Year consecrated	Between 1486 and 1491
Location
Location	Istanbul, Turkey
Location in the Fatih district of Istanbul
Geographic coordinates	41°00′12.24″N 28°55′42.96″E / 41.0034000°N 28.9286000°E / 41.0034000; 28.9286000
Architecture
Type	church
Style	Byzantine
Groundbreaking	6th century
Completed	1284
Specifications
Direction of façade	west-southwest
Minaret(s)	1
Materials	brick, stone

Koca Mustafa Pasha Mosque (Turkish: Koca Mustafa Paşa Camii; also named Sünbül Efendi Camii) is a former Eastern Orthodox church converted into a mosque by the Ottomans, located in Istanbul, Turkey. The church, as the adjoining monastery, was dedicated to Saint Andrew of Crete, and was named Saint Andrew in Krisei or by-the-Judgment (Greek: Μονὴ τοῦ Ἁγίου Ἀνδρέου ἐν τῇ Κρίσει, Monē tοu Hagiοu Andreοu en tē Krisei). Although heavily transformed during both the Byzantine and the Ottoman eras, it is one of the few extant churches in Istanbul whose foundation goes back to the sixth century.