This article is about a/an group of monsters in Kamen Rider Kiva.

The 13 Demon Races (十三魔族, Jūsan Mazoku) are thirteen races of monsters in Kamen Rider Kiva that are based either off of classic horror film monsters or monsters from various mythologies. The known members of these collection of various species compose of the Humans, Kivats, Fangires, Wolfens, Mermens, Frankens, Dorans, Sagarcs, and Legendorgas Races, with four of the other Demon Races haven't been mentioned.

Due to the Fangire's attacks on other races to prevent threats to them, most of the races are either nearly extinct or completely wiped out.

As of Kamen Rider Kiva: King of the Castle in the Demon World, the Legendorga Demon Race is wiped out.