诺斯特拉语系是一个由某些语言学家所提出的语系（或称为“总语系”、“超语系”），其中包括了许多欧亚大陆上的土着语言，如印欧语系、乌拉尔语系、阿尔泰语系以及南高加索语系。通常也包括北非和阿拉伯半岛的亚非语系，印度次大陆的达罗毗荼语系，此语系的具体构成因支持者而相异。

Nostratic is a macrofamily, or hypothetical large-scale language family, that includes many of the indigenous language families of Eurasia, although its exact composition and structure vary among proponents. In its more restricted, current form, it includes the Indo-European, Uralic, Altaic and Kartvelian languages. Often also included are the Afroasiatic languages native to North Africa, the Horn of Africa, the Arabian Peninsula and the Near East, and the Dravidian languages of the Indian Subcontinent (sometimes also Elamo-Dravidian, which connects India and the Iranian Plateau).