Sarir or Serir was a medieval Christian state lasting from the 5th century to the 12th century in the mountainous regions of modern-day Dagestan. Its name is derived from the Arabic word for "throne" and refers to a golden throne which was viewed as a symbol of royal authority.

Sarir was first documented as a political entity in the 5th century AD. The memory of its foundation was transmitted orally among the Caucasian Avars. According to one legend, the kingdom was established by a Persian general who was sent to control the Caucasus by a Sassanian king. This legend is corroborated by the names of local kings, which are normally of Persian or even Syrian etymology.

On the other hand, the 10th-century Arab historian Ibn Rustah names the king of Sarir as "Auhar", i.e., "Avar". Based on this evidence, Omeljan Pritsak favours another theory, which postulates that the ruling dynasty of Sarir was of the Avar origin.^{[citation needed]}

Sarir bordered the Khazars to the north, the Nakhs (called Dzurdzuks by Georgians) to the west and northwest, the Georgians and Derbent to the south. As the state was Christian, Arab historians erroneously viewed it as a dependency of the Byzantine Empire. The capital of Sarir was the city of Humraj, tentatively identified with the modern-day village Khunzakh. The king resided in a remote fortress at the top of a mountain.