The Argeș (Romanian pronunciation: [ˈardʒeʃ] ⓘ) is a river in Southern Romania, a left tributary of the Danube.

The river is believed to be the same as Ὀρδησσός Ordessus, a name mentioned by Ancient Greek historian Herodotus.

[5] An alternate etymology derives the name of the river from a Pecheneg word, transliterated into Romanian as argiș (meaning "higher ground").

The earliest recorded variants of the name, referring to the city of Curtea de Argeș (lit.

"The Court on the Argeș"), also suggest a derivation from this word: Argyas (1369), Argies (1379), Arghiș (1427), the river probably taking the name of the city.