芋属（学名：Colocasia）是天南星科下的一个属，为多年生草本植物。该属共有13种，分布于亚洲热带及亚热带地区。

Colocasia is a genus of flowering plants in the family Araceae, native to southeastern Asia and the Indian Subcontinent. Some species are widely cultivated and naturalized in other tropical and subtropical regions. Common names include Tarul, Karkala ko ganu, Elephant-ear, Taro, Cocoyam, Dasheen, Chembu, Champadhumpa, Shavige Gadde, and Eddoe. Elephant-ear and Cocoyam are also used for some other large-leaved genera in the Araceae, notably Xanthosoma and Caladium. The generic name is derived from the ancient Greek word kolokasion which in the Greek botanist Dioscorides (1st century AD) meant the edible roots of both Colocasia esculenta and Nelumbo nucifera. It is thought that the edible roots of Colocasia esculenta have been cultivated in Asia for more than ten thousand years.