Ad Dakhiliyah () is one of the eleven governorates (muhafazah) of Oman with Nizwa town as the regional center. It was previously a region (mintaqah). It became a governorate on 28 October 2011.
Ad Dakhiliyah Governorate consists of nine provinces (wilayat):
As of April 2024, 71.4% of the population are Omani nationals and 28.6% are expatriates.