Sattagydia (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 is believed to have been situated east of the Sulaiman Mountains up to the Indus River in the basin around Bannu.