奥塞梯语（奥塞梯语：Ирон ӕвзаг, Iron ævzag 或 Иронау, Ironauу，俄语：Осетинский язык）属印度-伊朗语族伊朗语支，是一种通行于俄罗斯及格鲁吉亚边界、高加索山区的一种语言。目前使用人口大约有50万，其中60%居住在俄罗斯的北奥塞梯，15%居住在格鲁吉亚的南奥塞梯。

奥塞梯语与Tati波斯语及Talyshi都是伊朗语支的主要语言，它在高加索地区有相当数量的使用人口。

相传奥塞梯语起源于萨尔马提亚语。

Ossetian, also known as Ossete and Ossetic (endonym: Ирон æвзаг, Iron ævzag), is an Eastern Iranian language spoken in Ossetia, a region on the northern slopes of the Caucasus Mountains.

The Ossete area in Russia is known as North Ossetia-Alania, while the area south of the border is referred to as South Ossetia, recognized by Russia, Nicaragua, Venezuela and Nauru as an independent state but by most of the rest of the international community as part of Georgia. Ossetian speakers number about 577,450, with 451,000 speakers in the Russian Federation recorded in the 2010 census.