Euchaneia (ἡ Εὐχάνεια, also τὰ Εὐχάϊνα[1]) was a Byzantine city in the Armeniac Theme, in what is now the West Black Sea Region of Turkey.
It was the site of the shrine of Saint Theodore Stratelates.
It was either identical with, or nearby Euchaita, the site of the veneration of Theodore Tiro.
With the ascent of the veneration of Theodore Stratelates, Euchaneia increased in importance, and emperor John I Tzimiskes in 972 renamed it to Theodoropolis (Greek: Θεοδωρόπολις).
Delehaye (1909) argued that the two cities were identical,[2] while Oikonomides (1986) argued that Euchaneia was at the site of modern Çorum, about one day's march (35 km) from Euchaita,[3]