Piako

Piako may refer to the following in New Zealand:
 * Matamata-Piako District, a local government area
 * Piako, New Zealand, a locality within Matamata-Piako District
 * Piako County, a former local government area
 * Piako River, a river system that drains into the Firth of Thames
 * Piako Swamp, another name for the Hauraki Plains
 * Piako (New Zealand electorate), a former parliamentary electorate