Adoor Diocese, one of the twelve dioceses of the Mar Thoma Syrian Church, is formed out of eight centres.

Adoor Diocese of the Mar Thoma Syrian Church of Malabar is one of the big dioceses of this church with a prestigious and rich tradition.

It has a strength of 122 parishes under its umbrella. Rt. Rev. Joseph Mar Barnabas Episcopa is currently the Diocesan Bishop of the Diocese.