The Church of Zoodochos Pigi (Greek: Ζωοδόχος Πηγή, "Life-giving Spring") is a Byzantine-era church in the village of Pyli, Boeotia (formerly known as Dervenosalesi), originally part of a monastery. Located some 5 km west of the village, the modern church was originally the narthex or lite of the katholikon church of a monastery. The monastery is otherwise unidentified and is not mentioned in any source or inscription, but the name "Monastery of Sterna" may be applicable to it. On the other hand, it is possible that this monastery is the same as the Monastery to the Theometor mentioned in the hagiography of St. Meletius the Younger, in which case it dates to the end of the 11th century. On stylistic grounds, it has been dated to the late 12th century.