The Saka were a group of nomadic Eastern Iranian peoples who lived in the Eurasian Steppe and the Tarim Basin from the 9th century BC to the 5th century AD. The Saka were closely related to the Scythians, and both groups formed parts of the wider Scythian cultures. However, both groups have differing specific geographical and cultural traits. The Saka languages formed part of the Scythian phylum, a branch of the Eastern Iranian languages.
Derived from the earlier Andronovo, Sintashta and Srubnaya cultures, the Saka were later influenced by the Bactria-Margiana Archaeological Culture and Iron-Age East Asian genetic influx. The ancient Persians, ancient Greeks, and ancient Babylonians respectively used the names "Saka," "Scythian," and "Cimmerian" for all the steppe nomads. However, the name "Saka" is used specifically for the ancient nomads of the eastern steppe, while "Scythian" is used for the related group of nomads living in the western steppe.