Alania was a medieval kingdom of the Iranian Alans (Proto-Ossetians) that flourished between the 9th–13th centuries in the Northern Caucasus, roughly in the location of latter-day Circassia, Chechnya, Ingushetia, and modern North Ossetia–Alania. With its capital at Maghas, the location of which is still disputed, it became independent from the Khazars in the late 9th century. It was Christianized by a Byzantine missionary soon after, in the early 10th century.

The Alans were an ancient and medieval Iranic nomadic pastoral people of the North Caucasus – generally regarded as part of the Sarmatians, and possibly related to the Massagetae. Modern historians have connected the Alans with the Central Asian Yancai of Chinese sources and with the Aorsi of Roman sources. Having migrated westwards and becoming dominant among the Sarmatians on the Pontic–Caspian steppe, the Alans are mentioned by Roman sources in the 1st century CE. At that time they had settled the region north of the Black Sea and frequently raided the Parthian Empire and the Caucasian provinces of the Roman Empire. From 215 to 250 CE the Goths broke their power on the Pontic Steppe.