奥日什是波兰的城镇，位于该国东北部，由瓦尔米亚-马祖里省负责管辖，始建于十五世纪，面积8.16平方公里，2006年人口5,804。第一次世界大战期间，俄罗斯在1914年11月至1915年2月期间占领该镇。

Orzysz [ˈɔʐɨʂ] (German:Arys, Lithuanian:Arys) is a town in Pisz County, Warmian-Masurian Voivodeship, Poland, with 7,512 inhabitants (2007). It is located on Orzysz Lake.

Until 1702, all church services in Orzysz were conducted in Polish. In 1834, according to the Prussian church census, there were 600 Poles and 502 Germans in the town parish. The census counted anyone who knew some German as German. The population of Orzysz slowly increased: there were 918 inhabitants in 1801, 1107 in 1846, 2201 in 1910 and 3543 in 1939.