Garjainia is an extinct genus of erythrosuchid archosauriform reptile from the Olenekian of Russia and South Africa. It contains two species, Garjainia prima, from the Yarengian/Yarkenskian Supergorizont of Russia, and Garjainia madiba, from the Burgersdorp Formation of South Africa. "Vjuskovia triplicostata", a name assigned to some erythrosuchid fossils from Russia, has been synonymized with Garjainia prima.