Cronadun is a small village located in the West Coast region of New Zealand's South Island.

It is situated on the east bank of the Inangahua River, near its junction with Boatmans Creek.

Sometimes recorded as Cronaden and Cronadon, the locality was named by three brothers – Timothy, John, and Dominic Gallagher – after their home in County Donegal.

[1] In 1901 Cronadun had a population of 39, with a hotel, post office, store, and telephone bureau.

[2] For a few years, Cronadun was the terminus of the Stillwater–Westport Line as construction progressed from Reefton alongside the Inangahua River towards the Buller Gorge.