Sattagydia or Thatagush (Old Persian: 𐎰𐎫𐎦𐎢𐏁 Thataguš, country of the "hundred cows") was one of the easternmost regions of the Achaemenid Empire, part of its Seventh tax district according to Herodotus, along with Gandārae, Dadicae and Aparytae. It was situated east of the Sulaiman Mountains up to the Indus in the Kurram River basin around Bannu in modern day's southern Khyber Pakhtunkhwa, Pakistan. Sattagydia was no longer mentioned by the third century BC, probably having been absorbed into one of the adjoining provinces.