The Banū Aws (Arabic: بنو أوس‎ Arabic pronunciation: [bænuː ˈæws], "Sons of Aws") or simply Aws (Arabic: أوس‎; also Romanized as Aus) was one of the main Arab tribes of Medina. The other was Khazraj, and the two, constituted the Ansar ("helpers [of Muhammad]") after the Hijra.

Aws and Khazraj were known as Banū Qayla (Arabic: بنو قيلة‎ Arabic pronunciation: [bænuː qeːlɐ]) in pre-Islamic era.

The word al-Aws means "the gift", probably a contraction for Aws Manāt (Arabic: أوس مناة‎, "the gift of Manāt"). The name was changed in Islamic times to Aws Allāh (Arabic: أوس الله‎).

About 300 A.D., during the emigration of Kahlān from Yemen prior to the Great Flood of Maʼrib Dam, Thaʻlaba bin ʻAmr, grand father of al-Aws, separated from his tribe and settled in Yathrib (Medina), which was then controlled by Jewish clans, and Banū Qayla were subordinate to the Jews for some time, until Mālik bin ʻAjlān of Khazraj asserts independence of the Jews, so Aws and Khazraj obtained a share of palm-trees and strongholds. Thus, about 5th century, Banū Qayla took control of Yathrib and Jews retired into the background for about a century.

Banu (in Persian: بانو‎ bânu), is a Persian name for girls used in Iran, Pakistan, Afghanistan, Turkey, India, and Nepal. While in Iran it translates to "lady", "princess" or "bride". in India, and Nepal it roughly translates to "little sister". In Turkey, it is a popular female name that refers to the original Persian word. Banu also apparently means "rays from the sun" in Telugu.

Notable figures, people, and institutions named Banu include:

AUS or Aus can refer to: