
Aria is an Achaemenid region centered on the city of Herat in present-day western Afghanistan. In classical sources, Aria has been several times confused with the greater region of ancient Ariana, of which Aria formed a part.

Ariana, the Latinized form of the Ancient Greek Ἀρ(ε)ιανή Ar(e)ianē, originating from the Old Persian word Ariyanem (Ariana) meaning "The Land of the Aryans", similar to the use of Āryāvarta. It was a general geographical term used by some Greek and Roman authors of the ancient period for a district of wide extent between Central Asia and the Indus River, comprising the eastern provinces of the Achaemenid Empire that covered the whole of modern-day Afghanistan, as well as the easternmost part of Iran and up to the Indus River in Pakistan.
Avestan geography is the compilation of the geographical references in the Avesta which are limited to the regions on the eastern Iranian Plateau up to Indo-Iranian border. It was common among the Indo-Iranians to identify concepts or features of traditional cosmography—mountains, lakes, rivers, etc.—with their concrete historical and geographical situation as they migrated and settled in various places.

Daxia, Ta-Hsia, or Ta-Hia was apparently the name given in antiquity by the Han Chinese to Tukhara or Tokhara: the main part of Bactria, in what is now northern Afghanistan, and parts of southern Tajikistan and Uzbekistan.

Drangiana or Zarangiana (Greek: Δραγγιανή, Drangianē; also attested in Old Western Iranian as 𐏀𐎼𐎣, Zraka or Zranka, was a historical region and administrative division of the Achaemenid Empire. This region comprises territory around Hamun Lake, wetlands in endorheic Sistan Basin on the Iran-Afghan border, and its primary watershed Helmand river in what is nowadays southwestern region of Afghanistan.

Gandhāra was an ancient region in the Peshawar basin in the far north-west of the ancient Indian subcontinent, corresponding to present-day north-west Pakistan and north-east Afghanistan. The centre of the region was at the confluence of the Kabul and Swat rivers, bounded by the Sulaiman Mountains on the west and the Indus River on the east. The Safed Koh mountains separated it from the Kohat region to the south. This being the core area of Gandhara, the cultural influence of "Greater Gandhara" extended across the Indus river to the Taxila region and westwards into the Kabul and Bamiyan valleys in Afghanistan, and northwards up to the Karakoram range. During the Achaemenid period and Hellenistic period, its capital city was Pushkalavati, modern Charsadda. Later the capital city was moved to Peshawar by the Kushan emperor Kanishka the Great in about 127 AD.

Paropamisadae or Parapamisadae was a satrapy of the Alexandrian Empire in modern Afghanistan and Pakistan, which largely coincided with the Achaemenid province of Parupraesanna. It consisted of the districts of Sattagydia, Gandhara, Buner and Udyana. Paruparaesanna is mentioned in the Akkadian language and Elamite language versions of the Behistun Inscription of Darius the Great, whereas in the Old Persian version it is called Gandāra. The entire satrapy was subsequently ceded by Seleucus I Nicator to Chandragupta Maurya following a treaty.