阿克尼斯泰是拉脱维亚的城镇，位于该国南部，毗邻与立陶宛接壤的边境，距离陶格夫匹尔斯69公里，由杰卡布皮尔斯县负责管辖，面积3.43平方公里，2004年人口1,951。

Aknīste ( pronunciation ; Lithuanian:Aknysta; formerly German:Oknist) is a town in Aknīste municipality, Selonia, in the southern portion of Latvia, near the Lithuanian border. The town is located near the river Dienvidsusēja.

The name, Aknīste, was first mentioned in 1298. From the 17th century the settlement was a part of Lithuania and after the partitions of the Polish–Lithuanian Commonwealth, of the Kovno Governorate of the Russian Empire, but in the early 1920s Lithuania exchanged Aknīste for Palanga.