Malankara Orthodox Syrian Church - Diocese of Idukki

Until 1982, the present churches of the Idukki diocese were the part of kottayam diocese. In 1982 the churches in the eastern part of kottayam diocese were took and formed the Idukki Diocese. The first metropolitan of idukki diocese was the late lamented His Grace Mathews Mar Barnabas metropolitan. His Grace Mathews mar Barnabas metropolitan took all initiatives and bought land and constructed aramana and also started idukki orthodox medical center hospital in concern to the social commitment of the diocese to the society.

In 1992 when His Grace Mathews Mar Barnabas took the charge of American diocese the then metropolitans were H.G. Mathews mar severios, late lamented Paulose mar Pachomios, H.G. Abraham mar severios, H.G. Augen mar Dionysius, H.G. paulose mar milithios (H.H. Baselios marthoma paulose II). During the period of late lamented Augen mar Dionysios the Idukki diocese achieved a major stream of growth . From 2009 the idukki diocese is under the spiritual leadership of H.G. Mathews mar Thevodosius Metropolitan. Presently there are 30 churches and more than 2000 families in Idukki diocese.