叶尼塞语系（Yeniseic 或 Yenisei-Ostyak）是分布在西伯利亚中部叶尼塞河流域的一个语系。

介绍

包括10种语言：
 凯特語（Ket）()
 尤格语（Yugh）† ()
 科特語（Kott）† ()
 阿林語（Arin） † ()
 阿桑語（Assan） † ()
 旁普科爾語（Pumpokol） † ()
 雅斯京语（Yastin）†
 雅林语（Yarin）†
 拜科特语（Baikot）†

其中的尤格语、旁普科爾語、阿林語和阿桑語早在18世纪消亡，科特語在19世纪末消亡，雅斯京语、雅林语、拜科特语则更早消亡。但是芬兰语言学家Castrén发表了详细的语法和词典。尤格語在1960年代绝种，俄国学者Werner对这种语言进行了深入的研究，发表了词典、语法和传统故事。如今只有凯特語还在使用中，约有1000个左右的老人懂这种语言。

叶尼塞语言的形态变化特别复杂，有前綴、後綴、中缀、元音交替等构词手段。

爭議
一些学者认为，中国古代的匈奴、羯等民族和使用叶尼塞语系语言的民族有同源关系。除此之外，认为叶尼塞语系和汉藏语系同源，為德內-高加索语系一支。另外亦有建議葉尼塞語系可與納-德內語系合併成為德內-葉尼塞語系或提納-高加索語系。

相关条目 
 凯特人
 尤格人

參考文獻 

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外部链接 
 http://www.ethnologue.com/show_family.asp?subid=92750

俄罗斯语言
古西伯利亞語言
語系
 
德內-高加索語系