皮亚西纳河（Пясина）是俄罗斯的河流，位于克拉斯诺亚尔斯克边疆区，河道全长818公里，流域面积182,000平方公里，发源自皮亚西诺湖，最终注入喀拉海，河流在9月至6月结冰，流域范围有总面积10,450平方公里的6万多个湖泊。

Pyasina River (Russian:Пясина) is a river in Krasnoyarsk Krai, Russia. The river is 818 kilometres (508 mi) long, and its basin covers 182,000 square kilometres (70,000 sq mi). The Pyasina River originates in Lake Pyasino and flows into the Pyasino Gulf of the Kara Sea. There are more than 60,000 lakes in the basin of the Pyasina covering a total area of 10,450 square kilometres (4,030 sq mi). The river freezes up in late September or early October and stays under the ice until June.