DIOCESES / PROVINCES
ABUJA PROVINCE

  Abuja Archdiocese
  Makurdi Diocese
  Lokoja Diocese
  Idah Diocese
  Otukpo Diocese
CALABAR PROVINCE
  Calabar Archdiocese
  Ogoja Diocese
  Ikot-Ekpene Diocese
  Port-Harcourt Diocese
  Uyo Diocese

courtesy Catholic Bishops Conference of Nigeria
IBADAN PROVINCE
  Ibadan Archdiocese
  Ondo Diocese
  Oyo Diocese
  Osogbo Diocese
  Ekiti Diocese
JOS PROVINCE
  Jos Archdiocese
  Yola Diocese
  Maiduguri Diocese
  Jalingo Diocese
  Bauchi Apostolic Vicariate
KADUNA PROVINCE
 

  Kaduna Archdiocese
  Sokoto Diocese
  Ilorin Diocese
  Minna Diocese