Diocese of Heraclea

Diocese of Heraclea may refer to:


 * Archdiocese of Heraclea in Europe, former Orthodox and titular Catholic metropolitan see at Marmara Ereğlisi in Turkey
 * Diocese of Eraclea, former and now titular Catholic see at Eraclea in Italy
 * Diocese of Heraclea at Latmus, former Orthodox and titular Catholic see at Heraclea at Latmus in Turkey
 * Diocese of Heraclea Lyncestis, former Orthodox and titular Catholic see at Heraclea Lyncestis in North Macedonia
 * Diocese of Heraclea Pontica, former Orthodox and titular Catholic see at Heraclea Pontica in Turkey
 * Diocese of Heraclea Salbace, former Orthodox and titular Catholic see at Heraclea Salbace in Turkey