The Roman Catholic Diocese of St. George's in Grenada (Latin: Dioecesis Sancti Georgii) is a diocese of the Catholic Church that encompasses only and the entirety of Grenada. It is a suffragan of the Metropolitan Archdiocese of Castries (Saint Lucia) and a member of the Antilles Episcopal Conference. The diocese depends on the Dicastery for Evangelization.

Its episcopal see is the Immaculate Conception Cathedral, in the national capital of St. George's.

• It was erected on 20 February 1956 as Diocese of St. George's in Grenada, on British Antillian territory split off from the Metropolitan Archdiocese of Port of Spain
• It lost territory on 1970.03.07 to establish the Diocese of Bridgetown-Kingstown.

As per 2014, it pastorally served 46,485 Catholics (45.4% of 102,295 total) on 340 km² in 20 parishes and 1 mission with 23 priests (7 diocesan, 16 religious), 8 deacons and 53 lay religious (20 brothers, 33 sisters) .

(all Roman Rite)

Suffragan Bishops of Saint George's in Grenada

• Justin James Field, Dominican Order (O.P.) (born England, UK) (1957.01.14 – death 1969.08.04)
• Patrick Webster, Benedictine Order (O.S.B.) (born Saint Lucia) (1970.03.07 – 1974.11.18), succeeding as former Titular Bishop of Otočac (1969.06.26 – 1970.03.07), Auxiliary Bishop of Saint George's in Grenada (1969.06.26 – 1970.03.07) and Apostolic Administrator of Saint George's in Grenada (1969.08.05 – 1970.03.07); later Metropolitan Archbishop of Castries (Saint Lucia) (1974.11.18 – retired 1979.05.10), died 1989
• Sydney Anicetus Charles (born Trinidad and Tobago) (1974.11.18 – retired 2002.07.10 - died 2018.09.04
• Vincent (Matthew) Darius, O.P. (born Grenada) (2002.07.10 – death 2016.04.26)
• Clyde Martin Harvey (born Trinidad and Tobago) (2017.06.23 – ...), no previous prelature.

• Patrick Webster, O.S.B. (1969-1970), appointed Bishop here

• List of Catholic dioceses in Grenada

• GCatholic with Google map - data for all section
• "Diocese of Saint George's in Grenada". Catholic-Hierarchy. Retrieved 2007-02-24.

12°03′14″N 61°45′08″W / 12.0538°N 61.7522°W / 12.0538; -61.7522