​ADONI, a town of British India, in the Bellary district of Madras, 307 m. from Madras by rail. It has manufactures of carpets, silk and cotton goods, and several factories for ginning and pressing cotton. The hill-fort above, now in ruins, was an important seat of government in Mahommedan times and is frequently mentioned in the wars of the 18th century. Pop. (1901) 30,416.