The Church of the Holy Saviour in Chora (Turkish: Kariye Müzesi, Kariye Camii, Kariye Kilisesi — the Chora Museum, Mosque, or Church) is a medieval Byzantine Greek Orthodox church preserved as a museum in the Edirnekapı neighborhood of Istanbul. The neighborhood is situated in the western part of the municipality () of the Fatih district. In the 16th century, during the Ottoman era, the church was converted into a mosque; it became a museum in 1948. The interior of the building is covered with some of the oldest and finest surviving Byzantine mosaics and frescoes; they were uncovered and restored after the building was secularized and turned into a museum.
The Chora Church was originally built as part of a monastery complex outside the walls of Constantinople, to the south of the Golden Horn. Literally translated, the church's full name was the Church of the Holy Saviour in the Country: although "The Church of the Holy Redeemer in the Fields" would be a more natural rendering of the name in English. (Greek ἡ Ἐκκλησία τοῦ Ἁγίου Σωτῆρος ἐν τῇ Χώρᾳ, hē Ekklēsia tou Hagiou Sōtēros en tēi Chōrai). The last part of that name, Chora, referring to its location originally outside of the walls, became the shortened name of the church. The original church on this site was built in the early 4th century, and stood outside of the 4th century walls of Constantine the Great. However, when Theodosius II built his formidable land walls in 413–414, the church became incorporated within the city's defences, but retained the name Chora. The name must have carried symbolic meaning, as the mosaics in the narthex describe Christ as the Land of the Living (ἡ Χώρα τῶν ζώντων, hē Chōra tōn zōntōn) and Mary, the Mother of Jesus, as the Container of the Uncontainable (ἡ Χώρα τοῦ Ἀχωρήτου, hē Chōra tou Achōrētou).