Orapiu is a rural settlement on the southeast coast of Waiheke Island in the Auckland Region of New Zealand.

It is at the end of a small peninsula between Te Matuku Bay and Waiheke Channel.

[7] Te Matuku Bay was used for food gathering and a place for waka to land by Māori living on Waiheke.

[11] It may have been the smallest local authority in New Zealand, controlling an area of 35 hectares (86 acres).

Orapiu is part of the larger Waiheke East statistical area.

[14] Of those at least 15 years old, 18 (31.6%) people had a bachelor's or higher degree, 30 (52.6%) had a post-high school certificate or diploma, and 6 (10.5%) people exclusively held high school qualifications.