Heydarabad-e Tang Seh Riz (, also Romanized as ḨeydarÃÂbÃÂd-e Tang Seh Rëz) is a village in Sarrud-e Shomali Rural District, in the Central District of Boyer-Ahmad County, Kohgiluyeh and Boyer-Ahmad Province, Iran. At the 2006 census, its population was 53, in 13 families.