The Puhinui Reserve is a protected working farm and wetland area in South Auckland, New Zealand, on the shores of the Manukau Harbour.

It is the location of the Puhinui Craters, and is an area of historic significance to Waiohua iwi.

[5] The sandflats, mangroves and shellbanks support populations of the buff-banded rail and the New Zealand fernbird.

[3] It is adjacent to the Waokauri / Pūkaki portage, one of the three major points where waka could be hauled between the Manukau Harbour and the east coast,[6] and the Puhinui Creek, which provided access to much of inland the South Auckland area (and to the Manukau Harbour in turn).

[3] The reserve is managed as a working sheep and cattle farm,[7] as well as a protected wetland.