奥斯特罗赫是乌克兰的城市，位于该国西部戈伦河畔，距离首府罗夫诺37公里，由罗夫诺州负责管辖，面积10.9平方公里，海拔高度195米，2011年人口15,528。

Ostroh (Ukrainian:Остро́г; Russian:Остро́г, Ostrog, Polish:Ostróg) is a historic city located in Rivne Oblast (province) of western Ukraine, located on the Horyn River. Ostroh is the administrative center of the Ostroh Raion (district) and is itself designated as a special administrative subordination within the oblast. The current estimated population is around 15,202 (as of 2007). The Ostroh Academy was established here in 1576, the first higher educational institution in current Ukraine. Furthermore, in the 16th century, the first East Slavic books, notably the Ostrog Bible, were printed there.