Alocasia robusta is a gigantic herb of the arum family (Araceae) which is endemic to the island of Borneo.

The plant is a rosette herb consisting of several very large leaves having a sagittate (arrowhead shaped) lamina or blade up to twelve feet (3.7 meters) long by nine feet (2.7 meters) wide,[1] borne on very stout petioles or stalks up to 12 feet (3.7 meters) in length.

More recently, Anthony Lamb of the Sabah Agricultural Department found and measured one individual with a lamina fifteen feet (4.6 meters) in length.,[2] the largest leaf of any non-palm (Not belonging to the family Arecaceae).

The inflorescence is the spathe and spadix typical of the Arum family, with the spathe being a very dark blackish-purple color.

This species was unknown to science prior to 1967.