Diocese of Heraclea may refer to:
, former Orthodox and titular Catholic metropolitan see at Marmara Ereğlisi in Turkey , former and now titular Catholic see at Eraclea in Italy , former Orthodox and titular Catholic see at Heraclea at Latmus in Turkey , former Orthodox and titular Catholic see at Heraclea Lyncestis in North Macedonia , former Orthodox and titular Catholic see at Heraclea Pontica in Turkey , former Orthodox and titular Catholic see at Heraclea Salbace in Turkey
See also Heraclea (disambiguation)