Arrojadoa dinae

{{Short description|Species of cactus}}

{{Speciesbox

|image = Arrojadoa dinae Buining & Brederoo.jpg

|status = VU

|status_system = IUCN3.1

|status_ref = {{cite iucn |author=Machado, M. |author2=Braun, P. |author3=Taylor, N.P. |author4=Zappi, D. |date=2017 |title=Arrojadoa dinae |volume=2017 |page=e.T40885A121437076 |doi=10.2305/IUCN.UK.2017-3.RLTS.T40885A121437076.en |access-date=15 November 2021}}

|genus = Arrojadoa

|species = dinae

|authority = Buining & Brederoo

}}

Arrojadoa dinae is a species of plant in the family Cactaceae. It is endemic to Brazil. Its natural habitat is dry savanna. It is threatened by habitat loss.

The main threats are deforestation for Eucalyptus plantations used for charcoal production. Collection of

the plant and fires can impact on its reproductive capacity.