Acalypha hontauyuensis is a species of plant in the family Euphorbiaceae.

It is a shrub endemic to Orchid Island, Taiwan.

[1][2] The Flora of China, however, lists it as a synonym of Acalypha suirenbiensis from the Taiwanese mainland.

[3] Acalypha hontauyuensis grows in dry scrub.

It is locally abundant but vulnerable to habitat loss.