The Theotokos Kosmosoteira (Greek: Θεοτόκος η Κοσμοσώτειρα, lit. 'Theotokos the World-Saviour') is a Greek Orthodox monastery in Feres, Evros Prefecture, Greece. It was built around 1152 by the sebastokrator Isaac Komnenos, a son of the Byzantine emperor Alexios I Komnenos. The monastery became the core of the settlement of Feres, but is last attested in the mid-14th century. By the 15th-century, under the Ottoman Empire, the complex was a mosque; it again became a church in 1940.