Shemasi mkuu (kwa Kiingereza: Archdeacon) ni cheo cha Kikanisa katika madhehebu mbalimbali ya Ukristo. Kiko chini ya askofu lakini juu ya vyeo vingine vingi vya kleri Mara nyingi nafasi hiyo imefananishwa na ile ya jicho (kwa Kilatini: oculus episcopi, jicho la askofu).. Cross, FL, ed. (1957), The Oxford Dictionary of the Christian Church, London: Oxford University Press, p. 79 . [1] Wikamusi ya Kiswahili ina maelezo na tafsiri ya maana ya neno: shemasi mkuu Role of Archdeacons, the tomb of Archdeacons and Kappalottam at Kuravilangadu, Nasrani, 2007-06-14  The Saint Thomas Christians in India from 52 to 1687 AD, DE: Srite, archived from the original on 2021-07-11, retrieved 2021-11-07  [2] Pakalomattom Ayrookuzhiyil family, archived from the original on 2011-06-24, retrieved 2021-11-07