Tangi Sar (Persian: تنگی سر, also Romanized as Tangī Sar and Tangīsar; also known as Tangeh Sar) is a village in Gavrud Rural District, Muchesh District, Kamyaran County, Kurdistan Province, Iran. At the 2006 census, its population was 1,412, in 356 families. The village is populated by Kurds.