The Diocese of Calicut (Latin: Dioecesis Calicuten(sis)) is a Latin Church ecclesiastical territory or diocese in India. It is a suffragan diocese in the ecclesiastical province of the metropolitan Archdiocese of Verapoly but depends on the missionary Roman Congregation for the Evangelization of Peoples.

Its cathedral is Mother of God Cathedral, dedicated to Our Lady, in the episcopal see of Kozhikode (Calicut).

As of 2015^[update], it pastorally served 48,250 Catholics (0.6% of 8,059,057 total population) on 8,036 km² in 41 parishes and 3 missions with 132 priests (57 diocesan, 75 religious), 837 lay religious (127 brothers, 710 sisters) and 12 seminarians.

• 12 June 1923: Established as Diocese of Calicut on territories split off from the Roman Catholic Diocese of Coimbatore, Diocese of Mangalore and Diocese of Mysore
• On 1949 it gained territory from Metropolitan Archdiocese of Pondicherry^{[citation needed]}
• Lost territories repeatedly: on 31 December 1953 to establish Diocese of Tellicherry, on 1998.11.05 to establish Diocese of Kannur, on 28 December 2013 to establish Diocese of Sultanpet.^[1][2]

• List of Catholic dioceses in India