Amomum arunachalense Hareesh & M. Sabu sp. nova (Zingiberaceae) is described from Arunachal Pradesh, northeastern India. It is similar to A. maximum, but differs from the latter by having a white rhizome with a pale brown center, an entire ligule, a labellum without lateral staminodes, an obtuse stamen crest and a non-winged, foveolate fruit. A detailed description of the plants along with photographs are provided.