奥里亚斯特拉省 （意大利语：Provincia dell'Ogliastra、萨丁语：Provìntzia de s'Ogiastra）是意大利撒丁的一个省。面积1,854平方公里，2006年7月人58,026人，是全国人口最少的省份。首府拉努塞伊和托尔托利。

下分23市镇。

The province of Ogliastra (Italian:provincia dell'Ogliastra [proˈvintʃa delloʎˈʎastra], Sardinian:provìntzia de s'Ogiastra) is a province in eastern Sardinia, Italy. Ogliastra is the most mountainous province in Sardinia. With only some 57,642 inhabitants, it is also the least populous province of Italy. The province has a population density of 31.08 inhabitants per square kilometer and the president of the province is Bruno Pilia. It corresponds roughly to the medieval Giudicato of Agugliastra. The province of Ogliastra contains 23 comuni (plural; singular: comune), see the list of communes of the Province of Ogliastra.