Ostend is a community on Waiheke Island in New Zealand's Hauraki Gulf, in the Auckland Region.
A causeway that spans Putiki Bay's western arm connects Ostend to Surfdale. Boatsmen moor their boats on the beach since it is easily accessible from the mainland marina at Half Moon Bay.
Ostend is home to the island's only supermarket (Countdown), an Auckland council branch office, the Baptist church, and a medical centre. It is recognised as the island's industrial sector.
According to the 2018 New Zealand census, Ostend had a population of 1,905 people and 771 households.