Ratha (Sanskrit: रथ, rátha, Avestan raθa) is the Indo-Iranian term for a spoked-wheel chariot or a cart of antiquity.
Chariots figure prominently in the Rigveda, evidencing their presence in India in the 2nd millennium BCE. Notably, the Rigveda differentiates between the Ratha (chariot) and the Anas (often translated as "cart"). Rigvedic chariots are described as made of the wood of Salmali (RV 10.85.20), Khadira and Simsapa (RV 3.53.19) trees. While the number of wheels varies, chariot measurements for each configuration are found in the Shulba Sutras.
Chariots also feature prominently in later texts, including the other Vedas, the Puranas and the great Hindu epics (Ramayana and Mahabharata). Indeed, most of the deities in the Hindu pantheon are portrayed as riding them. Among Rigvedic deities, notably Ushas (the dawn) rides in a chariot, as well as Agni in his function as a messenger between gods and men. In RV 6.61.13, the Sarasvati river is described as being wide and speedy, like a (Rigvedic) chariot.
At Harappa in modern-day Pakistan we find evidence for the use of terracotta model carts as early as 3500 BC during the Ravi Phase at Harappa.
During the Harappan Period (Harappa Phase, 2600...1900 BC) there was a dramatic increase in terracotta cart and wheel types at Harappa and other sites throughout the Indus region. The diversity in carts and wheels, including depictions of what may be spoked wheels, during this period of urban expansion and trade may reflect different functional needs, as well as stylistic and cultural preferences. The unique fonns and the early appearance of carts in the Indus valley region suggest that they are the result of indigenous technological development and not diffusion from West Asia or Central Asia as proposed by earlier scholars.