Cornubia can be: Cornubia, the ancient Latin name for either: Cornouaille, a historic region in Brittany, northwestern France Cornwall, a region in southwestern England Cornubia, a geologists' name for the Cornubian batholith, the granite massif of Devon and Cornwall in England Cornubia, Queensland, a southern suburb of Brisbane, Queensland, Australia Cornubia City, a new development north of Durban, South Africa SS Cornubia (ship) Cornubia (mite), a genus of mites