The Roman Catholic Diocese of Lutsk was first established in the 13th century as the diocese of Luceoria (Latin) or Łuck (Polish).

After the victory of Napoleon, the diocese was joined with the Diocese of Zhytomyr, forming the diocese of Lutzk-Zhitomir-Kamenetz.

[1] In 1925, the diocese of Lutsk was restored and the Diocese of Zhytomyr became separate.

[2][3] / exempt Armenian Catholic Ordinariate of Eastern Europe, directly dependent on the Holy See / Ruthenian Catholic Eparchy of Mukacheve