The Catholic Church in the Gambia and Sierra Leone, two Anglophone (ex-British) West African countries, is composed solely of a Latin hierarchy, comprising:

• one ecclesiastical province, covering all and only Sierra Leone,
  comprising the Metropolitan of capital Freetown and three suffragan dioceses.
• an exempt diocese (directly dependent on the Holy See) for all the Gambia, with see in its capital Banjul.

There are no Eastern Catholic or pre-diocesan jurisdictions or overlapping ordinariates.

Neither country has a national Episcopal Conference, but they form a joint one for the Gambia and Sierra Leone, which hosts it in Freetown. ^[1]

There are no titular sees. All defunct jurisdictions are precursors of present sees.

There formally is an Apostolic Nunciature (embassy-level papal diplomatic representation) to Sierra Leone and an Apostolic Nunciature to The Gambia, but both are vested in the Apostolic Nunciature to Liberia (in its capital Monrovia).

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• List of Catholic dioceses (structured view)
• Catholic Church in the Gambia
• Catholic Church in Sierra Leone