匈尼特人（拉丁语：Xionites，Chionites，或 Chionitae，中古波斯语: Xiyon; Avestan: Xiiaona; 粟特语: Xwn)，巴勒维语刻文称为Huna，Hunni，Yun，中文称为獯，一群古代游牧民族，语言属于伊朗语族，曾经占据河中地区与巴克特里亚。

阿米阿努斯·马尔切利努斯于356年至357年间，在贵霜帝国的巴尔干领土中活动时，首次记录下这个民族。在中古世纪后期，他们由中亚进入伊朗。他们的文化深受贵霜帝国与巴克特里亚的影响，在他们的领土上，保护了东伊朗语的使用。在萨珊王朝时代，他们成为萨珊王朝的外患之一。

Xionites, Chionites, or Chionitae (Middle Persian: Xiyon; Avestan: Xiiaona; Sogdian: Xwn; Pahlavi: Huna), or Hunni, Yun or Xūn (獯), were an Iranian-speaking people who were prominent in Transoxania and Bactria.

The Xionites (Chionitae) are first mentioned with Kushans (Cuseni) by Ammianus Marcellinus who spent the winter of 356-57 CE in their Balkh territory. They arrived with the wave of immigration from Central Asia into Iran in late antiquity. They were influenced by the Kushan and Bactrian cultures, while patronizing the Eastern Iranian languages, and became a threat on the northeastern frontier of the Sassanid Empire.