下乌斯奇基是波兰的城镇，位于该国东南部，毗邻与乌克兰接壤的边境，由喀尔巴阡山省负责管辖，始建于十六世纪，面积16.79平方公里，海拔高度480米，2006年人口9,478。

Ustrzyki Dolne pronounced ['usˈtʂɨkʲi ˈdɔlnɛ] (Yiddish:Istrik‎) is a town in south-eastern Poland, situated in the Subcarpathian Voivodeship (since 1999) close to the border with Ukraine. It is the capital of Bieszczady County, with 9,383 inhabitants (02.06.2009).