* _Sus scrofa domesticus_: Common domestic pig.
* _Sus scrofa domestica_: Miniature pig breeds, such as teacup and pot-bellied pigs.
* _Sus scrofa ferus_: Wild boar, but can also be kept as domestic animals.
Wild Hogs:
* _Sus scrofa_: Wild boar, found in Europe, North Africa, and Asia.
* _Sus cebifrons_: Visayan warty pig, native to the Philippines.
* _Sus celebensis_: Celebes warty pig, found in Sulawesi, Indonesia.
* _Sus oliveri_: Oliver's warty pig, found in the Philippines and Indonesia.
* _Sus verrucosus_: Javan warty pig, native to Java and nearby islands in Indonesia.
* _Sus barbatus_: Bornean bearded pig, found in Borneo.
* _Sus bucculentus_: Palawan bearded pig, native to the island of Palawan in the Philippines.
* _Sus heureni_: Pygmy hog, one of the smallest pig species, found in northern India and Nepal.
* _Sus salvanius_: Bornean pygmy pig, found in Borneo and Sumatra.
Extinct Hogs:
* _Sus strozzii_: Ancient wild boar, extinct in the Pleistocene epoch.
* _Sus falconeri_: Falconer's giant pig, extinct during the Pleistocene epoch.
* _Sus hysudricus_: Siwalik hog, extinct species from the Siwalik Hills in India and Nepal.
* _Sus lydekkeri_: Lydekker's pig, prehistoric pig species known only from fossil records.
* _Sus australis_: Giant forest hog, extinct species from Australia during the Pleistocene.