Pakak Hajji Heydar (Persian: پكك حاجي حيدر, also romanized as Pakak Ḩājjī Ḩeydar) is a village in Jahanabad Rural District, in the Central District of Hirmand County, Sistan and Baluchestan Province, Iran. At the 2006 census, its population was 495, in 99 families.