Ponatahi is a community in the South Wairarapa District of New Zealand's North Island.
It is located near the Ruamahanga River south-southeast of Carterton and north east of Greytown.
Nearby smaller settlements include Longbush to the south and Gladstone to the east.
Ponatahi is lowly populated and situated in a hilly rural area.
This Wellington Region-related geography article is a stub.