Nasr ol Din (, also Romanized as Naà Âr ol Dën and Naà Âr od Dën; also known as Nasradi, Nasreddin, and Nasredë) is a village in Gazik Rural District, Gazik District, Darmian County, South Khorasan Province, Iran. At the 2006 census, its population was 546, in 119 families.