Robert Wight (6 July 1796 – 26 May 1872) was a Scottish surgeon and botanist who spent 30 years in India. He studied botany in Edinburgh under John Hope. He was the director of the Botanic Garden in Madras. He made use of local artists to make illustrations of the plants around him. He learned the art of lithography and used it to publish the Icones Plantarum Indiae Orientalis (Illustrations of the plants of Eastern India) in six volumes in 1856.