Races of Tarkir

Humans
Dragons
Aven (aarakocra) : Tarkir Aven comes in the shape of different birds, including vultures, ravens, rails, and falcons. They are found in all clans except for the Mardu and appear mostly in the Ojutai and Dromoka Clans
Ainok: Canine humanoids that survive in the harsh environments of the plane. Affiliated with the Temur and Abzan and chiefly with the Dromoka
Djinn: Inhabitants of Tarkir's high peaks, affiliated with Jeskai and the Ojutai.
Demon: Summoned by the Sultai and the Silumgar Clans through deals with the Rakshasa.
Efreet: Inhabitants of Qadat, the Efreet are aligned with the Jeskai Way and Atarka
Kirin: Messengers that appear in fateful moments
Goblins: Pack creatures aligned with the Temur and Mardu and the Kolaghan and Atarka
Loxodons: Mammoth-like humanoids primarily native to the Qal Sisma Mountains.
Naga: Created from humans through ancient deals with the Rakshasa, the Naga aligned with the Sultai and Silumgar Clans. Orcs: Savage humanoids which are found primarily among the Mardu, Temur, and Abzan Clans and Kolaghan
Ogres: Feral humanoids aligned with the Mardu and Temur and Atarka
Phoenixes: Firebirds aligned with the Temur
Rakshasa: Cat-like demons, the Rakshasa are masters of dark pacts.
Vampires: Bloodsuckers aligned with the Sultai.
Yetis: Mountain-dwelling humanoid beasts.
Zombies: Called sibsig, they serve the Sultai and the Silumgar as an army.
Half-Dragon: These come in two variations, ones that are more human-like with heavy dragonic features and then the other type looks more like a humanoid dragon on two legs.
There are other races, these are merely for inspiring character ideas. Though of course not all the races listed are playable ones. (Yetis for example. No Brian, I know you read this and are going to make a smart ass remark. Andrew dont you make it because I called out Brian.)